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3 years ago

This equation needs to be solved

Mathematics

2 answers:

ella [17]3 years ago

6 0

-28n - 4 + 2n - 8 = 66

-26n - 12 = 66

-26n = 78

n = -3

velikii [3]3 years ago

3 0

66 = -4(7n + 1) + 2(n - 4)

Distribute -4 inside the parentheses.

66 = -28n - 4 + 2(n - 4)

Distribute 2 inside the parentheses.

66 = -28n - 4 + 2n - 8

Combine like terms.

66 = -26n - 12

Add 12 to both sides.

78 = -26n

Divide both sides by -26.

n = -3

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