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3x+4=-2-7
We move all terms to the left:
3x+4-(-2-7)=0
We add all the numbers together, and all the variables
3x+4-(-9)=0
We add all the numbers together, and all the variables
3x+13=0
We move all terms containing x to the left, all other terms to the right
3x=-13
x=-13/3
x=-4+1/3
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