12x+9=-20x+-15

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Solution for 12x+9=-20x+-15 equation: 



12x+9=-20x+-15

We move all terms to the left:

12x+9-(-20x+-15)=0

We add all the numbers together, and all the variables

12x-(-20x-15)+9=0

We get rid of parentheses

12x+20x+15+9=0

We add all the numbers together, and all the variables

32x+24=0

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

32x=-24

x=-24/32

x=-3/4

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