3x+8=-9x-4

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Solution for 3x+8=-9x-4 equation: 



3x+8=-9x-4

We move all terms to the left:

3x+8-(-9x-4)=0

We get rid of parentheses

3x+9x+4+8=0

We add all the numbers together, and all the variables

12x+12=0

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

12x=-12

x=-12/12

x=-1

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