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0.5(8-4x)=20
We move all terms to the left:
0.5(8-4x)-(20)=0
We add all the numbers together, and all the variables
0.5(-4x+8)-20=0
We multiply parentheses
-2x+4-20=0
We add all the numbers together, and all the variables
-2x-16=0
We move all terms containing x to the left, all other terms to the right
-2x=16
x=16/-2
x=-8
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