Mathematics, 06.05.2020 20:05 ChooseHappy
He work of a student to solve the equation 2(4x − 4) = 8 + 4x + 4 is shown below: Step 1. 2(4x − 4) = 8 + 4x + 4 Step 2. 6x − 6 = 12 + 4x Step 3. 6x − 4x = 12 + 6 Step 4. 2x = 18 Step 5. x = 9 In which step did the student first make an error and what is the correct step? Step 2, 8x − 6 = 2(6 + 2x + 2) Step 2, 8x − 8 = 12 + 4x Step 3, 6x − 4x = 12 − 6 Step 3, 6x + 4x = 12 + 6
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He work of a student to solve the equation 2(4x − 4) = 8 + 4x + 4 is shown below: Step 1. 2(4x − 4)...
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