Question

domingas work
4x - 1 + 3x = 2(7 - 4x)
4x - 1 + 3x = 14 - 8x
6x = 14 - 8x
+8x +8x
14x/14 = 14/14
x = 1
domingas work solving an equation is shown here. do you agree with her work and her final answer?
○ dominga made a mistake when distributing. she should have gotten 14 + 8x.
○ dominga made a mistake when combining like terms. she cannot combine -1 with the two x terms.
○ i agree with domingas work, and her final answer is correct.

Explanation:

Answer:

B. Dominga made a mistake when combining like terms. She cannot combine $-1$ with the two $x$ terms.