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5(20-x)=84
We move all terms to the left:
5(20-x)-(84)=0
We add all the numbers together, and all the variables
5(-1x+20)-84=0
We multiply parentheses
-5x+100-84=0
We add all the numbers together, and all the variables
-5x+16=0
We move all terms containing x to the left, all other terms to the right
-5x=-16
x=-16/-5
x=3+1/5
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