3(4x=7)=-40=1

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Solution for 3(4x=7)=-40=1 equation: 



3(4x=7)=-40=1

We move all terms to the left:

3(4x-(7))=0

We multiply parentheses

12x-21=0

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

12x=21

x=21/12

x=1+3/4

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