135-2x=90-7x

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Solution for 135-2x=90-7x equation: 



135-2x=90-7x

We move all terms to the left:

135-2x-(90-7x)=0

We add all the numbers together, and all the variables

-2x-(-7x+90)+135=0

We get rid of parentheses

-2x+7x-90+135=0

We add all the numbers together, and all the variables

5x+45=0

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

5x=-45

x=-45/5

x=-9

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