7x+55=12x+20

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Solution for 7x+55=12x+20 equation: 



7x+55=12x+20

We move all terms to the left:

7x+55-(12x+20)=0

We get rid of parentheses

7x-12x-20+55=0

We add all the numbers together, and all the variables

-5x+35=0

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

-5x=-35

x=-35/-5

x=+7

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