2x+12=9x+40

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Solution for 2x+12=9x+40 equation: 



2x+12=9x+40

We move all terms to the left:

2x+12-(9x+40)=0

We get rid of parentheses

2x-9x-40+12=0

We add all the numbers together, and all the variables

-7x-28=0

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

-7x=28

x=28/-7

x=-4

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