7x-55=2x+100

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Solution for 7x-55=2x+100 equation: 



7x-55=2x+100

We move all terms to the left:

7x-55-(2x+100)=0

We get rid of parentheses

7x-2x-100-55=0

We add all the numbers together, and all the variables

5x-155=0

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

5x=155

x=155/5

x=31

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