3x+9=(-15)

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



3x+9=(-15)

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x+24=0

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

3x=-24

x=-24/3

x=-8

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