90=3x+2+7x-1

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Solution for 90=3x+2+7x-1 equation: 



90=3x+2+7x-1

We move all terms to the left:

90-(3x+2+7x-1)=0

We add all the numbers together, and all the variables

-(10x+1)+90=0

We get rid of parentheses

-10x-1+90=0

We add all the numbers together, and all the variables

-10x+89=0

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

-10x=-89

x=-89/-10

x=8+9/10

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