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54-3x=12+10x
We move all terms to the left:
54-3x-(12+10x)=0
We add all the numbers together, and all the variables
-3x-(10x+12)+54=0
We get rid of parentheses
-3x-10x-12+54=0
We add all the numbers together, and all the variables
-13x+42=0
We move all terms containing x to the left, all other terms to the right
-13x=-42
x=-42/-13
x=3+3/13
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