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13-4=3x+4+2x-4
We move all terms to the left:
13-4-(3x+4+2x-4)=0
We add all the numbers together, and all the variables
-(+5x)+13-4=0
We add all the numbers together, and all the variables
-(+5x)+9=0
We get rid of parentheses
-5x+9=0
We move all terms containing x to the left, all other terms to the right
-5x=-9
x=-9/-5
x=1+4/5
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