90=40x+20

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Solution for 90=40x+20 equation: 



90=40x+20

We move all terms to the left:

90-(40x+20)=0

We get rid of parentheses

-40x-20+90=0

We add all the numbers together, and all the variables

-40x+70=0

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

-40x=-70

x=-70/-40

x=1+3/4

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