7x+-3x=-12

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Solution for 7x+-3x=-12 equation:



7x+-3x=-12
We move all terms to the left:
7x+-3x-(-12)=0
We add all the numbers together, and all the variables
4x+12=0
We move all terms containing x to the left, all other terms to the right
4x=-12
x=-12/4
x=-3

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