-140=7x+5x+4

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Solution for -140=7x+5x+4 equation: 



-140=7x+5x+4

We move all terms to the left:

-140-(7x+5x+4)=0

We add all the numbers together, and all the variables

-(12x+4)-140=0

We get rid of parentheses

-12x-4-140=0

We add all the numbers together, and all the variables

-12x-144=0

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

-12x=144

x=144/-12

x=-12

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