12+x+9=15x+6

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



12+x+9=15x+6

We move all terms to the left:

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

We add all the numbers together, and all the variables

x-(15x+6)+21=0

We get rid of parentheses

x-15x-6+21=0

We add all the numbers together, and all the variables

-14x+15=0

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

-14x=-15

x=-15/-14

x=1+1/14

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