x+15+x=4x-20

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



x+15+x=4x-20

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x-4x+20+15=0

We add all the numbers together, and all the variables

-2x+35=0

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

-2x=-35

x=-35/-2

x=17+1/2

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