Martina
Martina is solving the equation 4x - 11 = 2x + 391. Here are the first steps of her solution.
4x - 11 = 2x + 391
2x - 11 = 391
2x = 402
What did Martina do to get 2x - 11 = 391?
4x - 11 = 2x + 391
2x - 11 = 391
2x = 402
What did Martina do to get 2x - 11 = 391?
Correct answer:
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Marie
Answer to previous question is: She subtracted 2x from both sides of equation. 4x-2x=2x on left and 2x-2x = 0 on right.
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