90=2x+5x-51

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Solution for 90=2x+5x-51 equation: 



90=2x+5x-51

We move all terms to the left:

90-(2x+5x-51)=0

We add all the numbers together, and all the variables

-(7x-51)+90=0

We get rid of parentheses

-7x+51+90=0

We add all the numbers together, and all the variables

-7x+141=0

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

-7x=-141

x=-141/-7

x=20+1/7

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