90-x=50+9x

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Solution for 90-x=50+9x equation: 



90-x=50+9x

We move all terms to the left:

90-x-(50+9x)=0

We add all the numbers together, and all the variables

-x-(9x+50)+90=0

We add all the numbers together, and all the variables

-1x-(9x+50)+90=0

We get rid of parentheses

-1x-9x-50+90=0

We add all the numbers together, and all the variables

-10x+40=0

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

-10x=-40

x=-40/-10

x=+4

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