3x+15=6-2x

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Solution for 3x+15=6-2x equation: 



3x+15=6-2x

We move all terms to the left:

3x+15-(6-2x)=0

We add all the numbers together, and all the variables

3x-(-2x+6)+15=0

We get rid of parentheses

3x+2x-6+15=0

We add all the numbers together, and all the variables

5x+9=0

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

5x=-9

x=-9/5

x=-1+4/5

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