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2=-3x+25+x+21
We move all terms to the left:
2-(-3x+25+x+21)=0
We add all the numbers together, and all the variables
-(-2x+46)+2=0
We get rid of parentheses
2x-46+2=0
We add all the numbers together, and all the variables
2x-44=0
We move all terms containing x to the left, all other terms to the right
2x=44
x=44/2
x=22
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