5x+7=7x+139

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Solution for 5x+7=7x+139 equation: 



5x+7=7x+139

We move all terms to the left:

5x+7-(7x+139)=0

We get rid of parentheses

5x-7x-139+7=0

We add all the numbers together, and all the variables

-2x-132=0

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

-2x=132

x=132/-2

x=-66

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