X+30=2x+90

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Solution for X+30=2x+90 equation: 



X+30=2X+90

We move all terms to the left:

X+30-(2X+90)=0

We get rid of parentheses

X-2X-90+30=0

We add all the numbers together, and all the variables

-1X-60=0

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

-X=60

X=60/-1

X=-60

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