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28x+28=3x-9
We move all terms to the left:
28x+28-(3x-9)=0
We get rid of parentheses
28x-3x+9+28=0
We add all the numbers together, and all the variables
25x+37=0
We move all terms containing x to the left, all other terms to the right
25x=-37
x=-37/25
x=-1+12/25
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