x+x-8=18

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Solution for x+x-8=18 equation:



x+x-8=18
We move all terms to the left:
x+x-8-(18)=0
We add all the numbers together, and all the variables
2x-26=0
We move all terms containing x to the left, all other terms to the right
2x=26
x=26/2
x=13

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