Mistakes in solving equations | expressions, equations, and inequalities | 7th grade | Khan Academy
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Mistakes in solving equations | expressions, equations, and inequalities | 7th grade | Khan Academy
When doing algebra, we sometimes make mistakes! It's important to be able to check our own work (and other people's work) for correctness. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-8th-two-step-equations-dec-frac/e/find-the-mistake-two-step ...
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