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28+9=18x-3x+81
We move all terms to the left:
28+9-(18x-3x+81)=0
We add all the numbers together, and all the variables
-(15x+81)+28+9=0
We add all the numbers together, and all the variables
-(15x+81)+37=0
We get rid of parentheses
-15x-81+37=0
We add all the numbers together, and all the variables
-15x-44=0
We move all terms containing x to the left, all other terms to the right
-15x=44
x=44/-15
x=-2+14/15
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