90+9x=50+30x

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Solution for 90+9x=50+30x equation: 



90+9x=50+30x

We move all terms to the left:

90+9x-(50+30x)=0

We add all the numbers together, and all the variables

9x-(30x+50)+90=0

We get rid of parentheses

9x-30x-50+90=0

We add all the numbers together, and all the variables

-21x+40=0

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

-21x=-40

x=-40/-21

x=1+19/21

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