15x+3=-9x-9

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Solution for 15x+3=-9x-9 equation: 



15x+3=-9x-9

We move all terms to the left:

15x+3-(-9x-9)=0

We get rid of parentheses

15x+9x+9+3=0

We add all the numbers together, and all the variables

24x+12=0

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

24x=-12

x=-12/24

x=-1/2

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