3(x+12)-7(x-5)=-9

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Solution for 3(x+12)-7(x-5)=-9 equation: 



3(x+12)-7(x-5)=-9

We move all terms to the left:

3(x+12)-7(x-5)-(-9)=0

We add all the numbers together, and all the variables

3(x+12)-7(x-5)+9=0

We multiply parentheses

3x-7x+36+35+9=0

We add all the numbers together, and all the variables

-4x+80=0

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

-4x=-80

x=-80/-4

x=+20

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