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6+12x=-8.5-40
We move all terms to the left:
6+12x-(-8.5-40)=0
We add all the numbers together, and all the variables
12x+6-(-48.5)=0
We add all the numbers together, and all the variables
12x+54.5=0
We move all terms containing x to the left, all other terms to the right
12x=-54.5
x=-54.5/12
x=-4+1/1.8461538461538
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