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42-x=10+2x
We move all terms to the left:
42-x-(10+2x)=0
We add all the numbers together, and all the variables
-x-(2x+10)+42=0
We add all the numbers together, and all the variables
-1x-(2x+10)+42=0
We get rid of parentheses
-1x-2x-10+42=0
We add all the numbers together, and all the variables
-3x+32=0
We move all terms containing x to the left, all other terms to the right
-3x=-32
x=-32/-3
x=10+2/3
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