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195=-x+42
We move all terms to the left:
195-(-x+42)=0
We add all the numbers together, and all the variables
-(-1x+42)+195=0
We get rid of parentheses
1x-42+195=0
We add all the numbers together, and all the variables
x+153=0
We move all terms containing x to the left, all other terms to the right
x=-153
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