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30=30x-20
We move all terms to the left:
30-(30x-20)=0
We get rid of parentheses
-30x+20+30=0
We add all the numbers together, and all the variables
-30x+50=0
We move all terms containing x to the left, all other terms to the right
-30x=-50
x=-50/-30
x=1+2/3
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