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38=49-x
We move all terms to the left:
38-(49-x)=0
We add all the numbers together, and all the variables
-(-1x+49)+38=0
We get rid of parentheses
1x-49+38=0
We add all the numbers together, and all the variables
x-11=0
We move all terms containing x to the left, all other terms to the right
x=11
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