3x+4x=-9+-15

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Solution for 3x+4x=-9+-15 equation: 



3x+4x=-9+-15

We move all terms to the left:

3x+4x-(-9+-15)=0

We add all the numbers together, and all the variables

3x+4x-(-24)=0

We add all the numbers together, and all the variables

7x+24=0

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

7x=-24

x=-24/7

x=-3+3/7

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