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8x+4x+3x=12-17
We move all terms to the left:
8x+4x+3x-(12-17)=0
We add all the numbers together, and all the variables
8x+4x+3x-(-5)=0
We add all the numbers together, and all the variables
15x+5=0
We move all terms containing x to the left, all other terms to the right
15x=-5
x=-5/15
x=-1/3
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