x-7+(3x-3)=90

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Solution for x-7+(3x-3)=90 equation: 



x-7+(3x-3)=90

We move all terms to the left:

x-7+(3x-3)-(90)=0

We add all the numbers together, and all the variables

x+(3x-3)-97=0

We get rid of parentheses

x+3x-3-97=0

We add all the numbers together, and all the variables

4x-100=0

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

4x=100

x=100/4

x=25

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