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-3x-18-2x=-42+8x-210
We move all terms to the left:
-3x-18-2x-(-42+8x-210)=0
We add all the numbers together, and all the variables
-3x-2x-(8x-252)-18=0
We add all the numbers together, and all the variables
-5x-(8x-252)-18=0
We get rid of parentheses
-5x-8x+252-18=0
We add all the numbers together, and all the variables
-13x+234=0
We move all terms containing x to the left, all other terms to the right
-13x=-234
x=-234/-13
x=+18
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