12X+6=9x-15

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Solution for 12X+6=9x-15 equation: 



12X+6=9X-15

We move all terms to the left:

12X+6-(9X-15)=0

We get rid of parentheses

12X-9X+15+6=0

We add all the numbers together, and all the variables

3X+21=0

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

3X=-21

X=-21/3

X=-7

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