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-74-5x=42-x
We move all terms to the left:
-74-5x-(42-x)=0
We add all the numbers together, and all the variables
-5x-(-1x+42)-74=0
We get rid of parentheses
-5x+1x-42-74=0
We add all the numbers together, and all the variables
-4x-116=0
We move all terms containing x to the left, all other terms to the right
-4x=116
x=116/-4
x=-29
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