5x+9-3x=5x-12

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Solution for 5x+9-3x=5x-12 equation: 



5x+9-3x=5x-12

We move all terms to the left:

5x+9-3x-(5x-12)=0

We add all the numbers together, and all the variables

2x-(5x-12)+9=0

We get rid of parentheses

2x-5x+12+9=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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