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50x-30=15x+20
We move all terms to the left:
50x-30-(15x+20)=0
We get rid of parentheses
50x-15x-20-30=0
We add all the numbers together, and all the variables
35x-50=0
We move all terms containing x to the left, all other terms to the right
35x=50
x=50/35
x=1+3/7
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