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-7x+12=3x+28
We move all terms to the left:
-7x+12-(3x+28)=0
We get rid of parentheses
-7x-3x-28+12=0
We add all the numbers together, and all the variables
-10x-16=0
We move all terms containing x to the left, all other terms to the right
-10x=16
x=16/-10
x=-1+3/5
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