15-3x=20+x

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Solution for 15-3x=20+x equation: 



15-3x=20+x

We move all terms to the left:

15-3x-(20+x)=0

We add all the numbers together, and all the variables

-3x-(x+20)+15=0

We get rid of parentheses

-3x-x-20+15=0

We add all the numbers together, and all the variables

-4x-5=0

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

-4x=5

x=5/-4

x=-1+1/4

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