-40=12.x+8

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Solution for -40=12.x+8 equation: 



-40=12.x+8

We move all terms to the left:

-40-(12.x+8)=0

We get rid of parentheses

-12.x-8-40=0

We add all the numbers together, and all the variables

-12x-48=0

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

-12x=48

x=48/-12

x=-4

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