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15-x=5x+3
We move all terms to the left:
15-x-(5x+3)=0
We add all the numbers together, and all the variables
-1x-(5x+3)+15=0
We get rid of parentheses
-1x-5x-3+15=0
We add all the numbers together, and all the variables
-6x+12=0
We move all terms containing x to the left, all other terms to the right
-6x=-12
x=-12/-6
x=+2
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