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0.8x+0.2(40)=0.5(x+40)
We move all terms to the left:
0.8x+0.2(40)-(0.5(x+40))=0
We add all the numbers together, and all the variables
0.8x-(0.5(x+40))+0.24=0
We calculate terms in parentheses: -(0.5(x+40)), so:We get rid of parentheses
0.5(x+40)
We multiply parentheses
0.5x+20
Back to the equation:
-(0.5x+20)
0.8x-0.5x-20+0.24=0
We add all the numbers together, and all the variables
0.3x-19.76=0
We move all terms containing x to the left, all other terms to the right
0.3x=19.76
x=19.76/0.3
x=65+0.26/0.3
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