90=2x-3+x

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Solution for 90=2x-3+x equation: 



90=2x-3+x

We move all terms to the left:

90-(2x-3+x)=0

We add all the numbers together, and all the variables

-(3x-3)+90=0

We get rid of parentheses

-3x+3+90=0

We add all the numbers together, and all the variables

-3x+93=0

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

-3x=-93

x=-93/-3

x=+31

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