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30+28=2x(15+)
We move all terms to the left:
30+28-(2x(15+))=0
We add all the numbers together, and all the variables
-(2x0)+30+28=0
We add all the numbers together, and all the variables
-2x+58=0
We move all terms containing x to the left, all other terms to the right
-2x=-58
x=-58/-2
x=+29
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