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-18-12x=-4-5x
We move all terms to the left:
-18-12x-(-4-5x)=0
We add all the numbers together, and all the variables
-12x-(-5x-4)-18=0
We get rid of parentheses
-12x+5x+4-18=0
We add all the numbers together, and all the variables
-7x-14=0
We move all terms containing x to the left, all other terms to the right
-7x=14
x=14/-7
x=-2
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