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-38=-7x+4
We move all terms to the left:
-38-(-7x+4)=0
We get rid of parentheses
7x-4-38=0
We add all the numbers together, and all the variables
7x-42=0
We move all terms containing x to the left, all other terms to the right
7x=42
x=42/7
x=6
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