x+2x+7=-20+4x+15

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Solution for x+2x+7=-20+4x+15 equation: 



x+2x+7=-20+4x+15

We move all terms to the left:

x+2x+7-(-20+4x+15)=0

We add all the numbers together, and all the variables

x+2x-(4x-5)+7=0

We add all the numbers together, and all the variables

3x-(4x-5)+7=0

We get rid of parentheses

3x-4x+5+7=0

We add all the numbers together, and all the variables

-1x+12=0

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

-x=-12

x=-12/-1

x=+12

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