// Numbas version: exam_results_page_options {"name": "Solving linear inequalities/inequations: two inequalities", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": ["a", "b", "c", "left_ba", "right_ba", "left_bb", "right_bb", "left_bc", "right_bc", "bleft", "bright"], "name": "Solving linear inequalities/inequations: two inequalities", "tags": ["algebra", "balancing equations", "inequalities", "inequality", "inequation", "inequations", "Linear equations", "linear equations", "rearranging equations", "solving equations", "Solving equations", "two step equations"], "advice": "", "rulesets": {}, "parts": [{"stepsPenalty": "1", "prompt": "
Given that $x>\\var{left_ba}$ and $x<\\var{right_ba}$, we can write [[0]] $<x<$ [[1]].
", "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "gaps": [{"allowFractions": false, "variableReplacements": [], "maxValue": "{left_ba}", "minValue": "{left_ba}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": false, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}, {"allowFractions": false, "variableReplacements": [], "maxValue": "{right_ba}", "minValue": "{right_ba}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": false, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}], "steps": [{"prompt": "$\\var{left_ba} <x< \\var{right_ba}$ means $\\var{left_ba} <x$ and $x< \\var{right_ba}$. You could read this as \"$x$ is between $\\var{left_ba}$ and $\\var{right_ba}$\".
", "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "information"}], "scripts": {}, "marks": 0, "showCorrectAnswer": true, "type": "gapfill"}, {"stepsPenalty": "1", "prompt": "Given $\\var{left_bb}<\\frac{x}{\\var{c}}<\\var{right_bb}$, solving for $x$ gives [[0]]$<x<$ [[1]].
", "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "gaps": [{"allowFractions": true, "variableReplacements": [], "maxValue": "{bleft}", "minValue": "{bleft}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": true, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}, {"allowFractions": false, "variableReplacements": [], "maxValue": "{bright}", "minValue": "{bright}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": false, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}], "steps": [{"prompt": "Solving inequalities is similar to solving equations, ensure you do the same thing to all sides. Note that the operations we do are to get $x$ by itself.
\n$\\var{left_bb}$ | \n$<$ | \n$\\displaystyle \\frac{x}{\\var{c}}$ | \n$<$ | \n$\\var{right_bb}$ | \n
\n | \n | \n | \n | \n |
$\\var{left_bb}\\times \\var{c}$ | \n$<$ | \n$\\displaystyle \\frac{x}{\\var{c}}\\times \\var{c}$ | \n$<$ | \n$\\var{right_bb}\\times \\var{c}$ | \n
\n | \n | \n | \n | \n |
$\\var{bleft}$ | \n$<$ | \n$x$ | \n$<$ | \n$\\var{bright}$ | \n
Given $\\var{left_bc}<\\frac{\\simplify{{a}x+{b}}}{\\var{c}}<\\var{right_bc}$, solving for $x$ gives [[0]]$<x<$ [[1]].
", "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "gaps": [{"allowFractions": true, "variableReplacements": [], "maxValue": "{left_bc*c-b}/{a}", "minValue": "{left_bc*c-b}/{a}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": true, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}, {"allowFractions": true, "variableReplacements": [], "maxValue": "{right_bc*c-b}/{a}", "minValue": "{right_bc*c-b}/{a}", "variableReplacementStrategy": "originalfirst", "correctAnswerFraction": true, "showCorrectAnswer": true, "scripts": {}, "marks": 1, "type": "numberentry", "showPrecisionHint": false}], "steps": [{"prompt": "Solving inequalities is similar to solving equations, ensure you do the same thing to all sides. Note that the operations we do are to get $x$ by itself.
\n$\\var{left_bc}$ | \n$<$ | \n$\\displaystyle \\frac{\\simplify{{a}x+{b}}}{\\var{c}}$ | \n$<$ | \n$\\var{right_bc}$ | \n
\n | \n | \n | \n | \n |
$\\var{left_bc}\\times \\var{c}$ | \n$<$ | \n$\\displaystyle \\frac{\\simplify{{a}x+{b}}}{\\var{c}}\\times \\var{c}$ | \n$<$ | \n$\\var{right_bc}\\times \\var{c}$ | \n
\n | \n | \n | \n | \n |
$\\var{left_bc*c}$ | \n$<$ | \n$\\simplify{{a}x+{b}}$ | \n$<$ | \n$\\var{right_bc*c}$ | \n
\n | \n | \n | \n | \n |
$\\simplify[basic]{{left_bc*c}-{b}}$ | \n$<$ | \n$\\simplify[basic]{{a}x+{b}-{b}}$ | \n$<$ | \n$\\simplify[basic]{{right_bc*c}-{b}}$ | \n
\n | \n | \n | \n | \n |
$\\var{left_bc*c-b}$ | \n$<$ | \n$\\var{a}x$ | \n$<$ | \n$\\var{right_bc*c-b}$ | \n
\n | \n | \n | \n | \n |
$\\displaystyle\\frac{\\var{left_bc*c-b}}{\\var{a}}$ | \n$<$ | \n$\\displaystyle\\frac{\\var{a}x}{\\var{a}}$ | \n$<$ | \n$\\displaystyle\\frac{\\var{right_bc*c-b}}{\\var{a}}$ | \n
\n | \n | \n | \n | \n |
$\\displaystyle\\simplify{{left_bc*c-b}/{a}}$ | \n$<$ | \n$x$ | \n$<$ | \n$\\displaystyle\\simplify{{right_bc*c-b}/{a}}$ | \n