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28=-2x+3+7x
We move all terms to the left:
28-(-2x+3+7x)=0
We add all the numbers together, and all the variables
-(5x+3)+28=0
We get rid of parentheses
-5x-3+28=0
We add all the numbers together, and all the variables
-5x+25=0
We move all terms containing x to the left, all other terms to the right
-5x=-25
x=-25/-5
x=+5
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