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15-2x=4x+3+20
We move all terms to the left:
15-2x-(4x+3+20)=0
We add all the numbers together, and all the variables
-2x-(4x+23)+15=0
We get rid of parentheses
-2x-4x-23+15=0
We add all the numbers together, and all the variables
-6x-8=0
We move all terms containing x to the left, all other terms to the right
-6x=8
x=8/-6
x=-1+1/3
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