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6x+26=2x-9=11x-31
We move all terms to the left:
6x+26-(2x-9)=0
We get rid of parentheses
6x-2x+9+26=0
We add all the numbers together, and all the variables
4x+35=0
We move all terms containing x to the left, all other terms to the right
4x=-35
x=-35/4
x=-8+3/4
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