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225-x=255+31x
We move all terms to the left:
225-x-(255+31x)=0
We add all the numbers together, and all the variables
-x-(31x+255)+225=0
We add all the numbers together, and all the variables
-1x-(31x+255)+225=0
We get rid of parentheses
-1x-31x-255+225=0
We add all the numbers together, and all the variables
-32x-30=0
We move all terms containing x to the left, all other terms to the right
-32x=30
x=30/-32
x=-15/16
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