7x+12=140

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Solution for 7x+12=140 equation: 



7x+12=140

We move all terms to the left:

7x+12-(140)=0

We add all the numbers together, and all the variables

7x-128=0

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

7x=128

x=128/7

x=18+2/7

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