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5x+12=-2-7+12
We move all terms to the left:
5x+12-(-2-7+12)=0
We add all the numbers together, and all the variables
5x+12-3=0
We add all the numbers together, and all the variables
5x+9=0
We move all terms containing x to the left, all other terms to the right
5x=-9
x=-9/5
x=-1+4/5
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