90=40x+30

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Solution for 90=40x+30 equation: 



90=40x+30

We move all terms to the left:

90-(40x+30)=0

We get rid of parentheses

-40x-30+90=0

We add all the numbers together, and all the variables

-40x+60=0

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

-40x=-60

x=-60/-40

x=1+1/2

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