Simplify.
-2{[6(x - 1) + 7] - [2(3x - 1) + 7]}
A) -8
B) 0
C) 12x - 4
D) 24x - 8

Name: Simplify. -2{[6(x - 1) + 7] - [2(3x - 1) + 7]} A) -8 B) 0 C) 12x - 4 D) 24x - 8
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Question

Quizplus · Accepted Answer

First, simplify inside the brackets:  [6(x - 1) + 7] = 6x - 6 + 7 = 6x + 1  [2(3x - 1) + 7] = 6x - 2 + 7 = 6x + 5  Now, subtract the second bracket from the first:  (6x + 1) - (6x + 5) = 6x + 1 - 6x - 5 = -4  Finally, multiply by 2:  2(-4) = -8.