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6(-1x-2x)+7=-83
We move all terms to the left:
6(-1x-2x)+7-(-83)=0
We add all the numbers together, and all the variables
6(-3x)+7-(-83)=0
We add all the numbers together, and all the variables
6(-3x)+90=0
We multiply parentheses
-18x+90=0
We move all terms containing x to the left, all other terms to the right
-18x=-90
x=-90/-18
x=+5
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