Tyler tried to solve an equation step by step.

3(x+4)&=-18
3x+12=-18 (Step 1)
3x=-30 (Step 2)
x=-10 (Step 3)
Find Tyler's mistake.
Choose 1 answer:
(Choice A) Step 1
(Choice B) Step 2
(Choice C) Step 3
(Choice D) Tyler did not make a mistake

1 answer

The correct answer is (Choice A) Step 1.

In Step 1, Tyler incorrectly distributed the 3 to both the x and the 4 inside the parentheses. The correct distribution should be as follows:

3(x+4) = 3 * x + 3 * 4 = 3x + 12

By misapplying the distributive property, Tyler obtained an incorrect equation in Step 1, leading to the subsequent incorrect steps.
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