7x-(x+20)=90

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Solution for 7x-(x+20)=90 equation: 



7x-(x+20)=90

We move all terms to the left:

7x-(x+20)-(90)=0

We get rid of parentheses

7x-x-20-90=0

We add all the numbers together, and all the variables

6x-110=0

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

6x=110

x=110/6

x=18+1/3

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