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0.5(4x+20)=-10
We move all terms to the left:
0.5(4x+20)-(-10)=0
We add all the numbers together, and all the variables
0.5(4x+20)+10=0
We multiply parentheses
2x+10+10=0
We add all the numbers together, and all the variables
2x+20=0
We move all terms containing x to the left, all other terms to the right
2x=-20
x=-20/2
x=-10
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