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12/18=3x+4-15
We move all terms to the left:
12/18-(3x+4-15)=0
We add all the numbers together, and all the variables
-(3x-11)+12/18=0
We get rid of parentheses
-3x+11+12/18=0
We multiply all the terms by the denominator
-3x*18+12+11*18=0
We add all the numbers together, and all the variables
-3x*18+210=0
Wy multiply elements
-54x+210=0
We move all terms containing x to the left, all other terms to the right
-54x=-210
x=-210/-54
x=3+8/9
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