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X=13X+30
We move all terms to the left:
X-(13X+30)=0
We get rid of parentheses
X-13X-30=0
We add all the numbers together, and all the variables
-12X-30=0
We move all terms containing X to the left, all other terms to the right
-12X=30
X=30/-12
X=-2+1/2
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