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42=-x+235
We move all terms to the left:
42-(-x+235)=0
We add all the numbers together, and all the variables
-(-1x+235)+42=0
We get rid of parentheses
1x-235+42=0
We add all the numbers together, and all the variables
x-193=0
We move all terms containing x to the left, all other terms to the right
x=193
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