15-x=13-3x

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Solution for 15-x=13-3x equation: 



15-x=13-3x

We move all terms to the left:

15-x-(13-3x)=0

We add all the numbers together, and all the variables

-x-(-3x+13)+15=0

We add all the numbers together, and all the variables

-1x-(-3x+13)+15=0

We get rid of parentheses

-1x+3x-13+15=0

We add all the numbers together, and all the variables

2x+2=0

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

2x=-2

x=-2/2

x=-1

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