# heike hoffmann

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## heike's activity

#### heike hoffmann on Simultaneous equations: elimination 1 year, 2 months ago

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#### heike hoffmann on Solving linear equations: collecting like terms and solving 1 year, 2 months ago

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#### heike hoffmann on Algebra VIII: solving simultaneous equations (equate & substitute) 1 year, 2 months ago

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#### heike hoffmann on Algebra VIII: solving simultaneous equations (by elimination) 1 year, 2 months ago

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