138+7x+40=90

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Solution for 138+7x+40=90 equation: 



138+7x+40=90

We move all terms to the left:

138+7x+40-(90)=0

We add all the numbers together, and all the variables

7x+88=0

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

7x=-88

x=-88/7

x=-12+4/7

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