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10x^2+3x=30x+10x^2
We move all terms to the left:
10x^2+3x-(30x+10x^2)=0
We get rid of parentheses
10x^2-10x^2-30x+3x=0
We add all the numbers together, and all the variables
-27x=0
x=0/-27
x=0
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