12-x-15=6-3x

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Solution for 12-x-15=6-3x equation: 



12-x-15=6-3x

We move all terms to the left:

12-x-15-(6-3x)=0

We add all the numbers together, and all the variables

-x-(-3x+6)+12-15=0

We add all the numbers together, and all the variables

-1x-(-3x+6)-3=0

We get rid of parentheses

-1x+3x-6-3=0

We add all the numbers together, and all the variables

2x-9=0

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

2x=9

x=9/2

x=4+1/2

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