8(x=7)=-21

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Solution for 8(x=7)=-21 equation: 



8(x=7)=-21

We move all terms to the left:

8(x-(7))=0

We multiply parentheses

8x-56=0

We move all terms containing x to the left, all other terms to the right

8x=56

x=56/8

x=7

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