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18+2x=8+4x
We move all terms to the left:
18+2x-(8+4x)=0
We add all the numbers together, and all the variables
2x-(4x+8)+18=0
We get rid of parentheses
2x-4x-8+18=0
We add all the numbers together, and all the variables
-2x+10=0
We move all terms containing x to the left, all other terms to the right
-2x=-10
x=-10/-2
x=+5
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