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50=3x+7
We move all terms to the left:
50-(3x+7)=0
We get rid of parentheses
-3x-7+50=0
We add all the numbers together, and all the variables
-3x+43=0
We move all terms containing x to the left, all other terms to the right
-3x=-43
x=-43/-3
x=14+1/3
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