Question

Find d if 2(d - 4) = -2d + 8
F. -4
G. -2
H. 2
I. 4

Answer 1

2(d - 4) = - 2d + 8 (multiply 2 through the parenthesis)
2d - 8 = - 2d + 8
2d + 2d = 8 + 8
4d = 16
d = 4

check...
2(d - 4) = - 2d + 8
2(4 - 4) = - 2(4) + 8
2(0) = -8 + 8
0 = 0 (correct)

ANSWER : d = 4

Answer 2

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Answer 3

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Answer 4

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