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5x+-21=3x+25
We move all terms to the left:
5x+-21-(3x+25)=0
We add all the numbers together, and all the variables
5x-(3x+25)=0
We get rid of parentheses
5x-3x-25=0
We add all the numbers together, and all the variables
2x-25=0
We move all terms containing x to the left, all other terms to the right
2x=25
x=25/2
x=12+1/2
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