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Mathematics 8 Online
OpenStudy (anonymous):

A student is asked to solve the equation below and to justify her/his steps. Identify what, if anything, is incorrect in her/his math or justification. x + 4 = –8 Step Justification x + 4 = –8 Given x + 4 + (–4) = –8 + (–4) Addition property of equality x = –4

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