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x=9x-30
We move all terms to the left:
x-(9x-30)=0
We get rid of parentheses
x-9x+30=0
We add all the numbers together, and all the variables
-8x+30=0
We move all terms containing x to the left, all other terms to the right
-8x=-30
x=-30/-8
x=3+3/4
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