3x+15=3+1x

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Solution for 3x+15=3+1x equation: 



3x+15=3+1x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x-x-3+15=0

We add all the numbers together, and all the variables

2x+12=0

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

2x=-12

x=-12/2

x=-6

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