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(9x+3)+(13x-26)=77
We move all terms to the left:
(9x+3)+(13x-26)-(77)=0
We get rid of parentheses
9x+13x+3-26-77=0
We add all the numbers together, and all the variables
22x-100=0
We move all terms containing x to the left, all other terms to the right
22x=100
x=100/22
x=4+6/11
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