15+x=6x-20

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Solution for 15+x=6x-20 equation: 



15+x=6x-20

We move all terms to the left:

15+x-(6x-20)=0

We get rid of parentheses

x-6x+20+15=0

We add all the numbers together, and all the variables

-5x+35=0

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

-5x=-35

x=-35/-5

x=+7

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