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13x+26=4x+242
We move all terms to the left:
13x+26-(4x+242)=0
We get rid of parentheses
13x-4x-242+26=0
We add all the numbers together, and all the variables
9x-216=0
We move all terms containing x to the left, all other terms to the right
9x=216
x=216/9
x=24
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