3x+9x=-24

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Solution for 3x+9x=-24 equation: 



3x+9x=-24

We move all terms to the left:

3x+9x-(-24)=0

We add all the numbers together, and all the variables

12x+24=0

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

12x=-24

x=-24/12

x=-2

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