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8x+13=2x-23
We move all terms to the left:
8x+13-(2x-23)=0
We get rid of parentheses
8x-2x+23+13=0
We add all the numbers together, and all the variables
6x+36=0
We move all terms containing x to the left, all other terms to the right
6x=-36
x=-36/6
x=-6
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