x+15=2x+20

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Solution for x+15=2x+20 equation: 



x+15=2x+20

We move all terms to the left:

x+15-(2x+20)=0

We get rid of parentheses

x-2x-20+15=0

We add all the numbers together, and all the variables

-1x-5=0

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

-x=5

x=5/-1

x=-5

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