6+3x=12x-15

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



6+3x=12x-15

We move all terms to the left:

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

We get rid of parentheses

3x-12x+15+6=0

We add all the numbers together, and all the variables

-9x+21=0

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

-9x=-21

x=-21/-9

x=2+1/3

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