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Mathematics, 19.03.2021 18:50 senituliii

See below for Chris' work. Did he solve the problem correctly? Why or why not? Solve the following equation for c: 3a - 3b + 3c - 3 = 6a + 9b - 12
Step 1: -3b + 3c - 3 = 3a + 96 - 12
Step 2: 3c - 3 = 3a + 12b - 12
Step 3: 3c = 3a + 12b - 9
Step 4: c = a + 12b - 9

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