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0.65x+0.05(20-x)=0.10(82)
We move all terms to the left:
0.65x+0.05(20-x)-(0.10(82))=0
We add all the numbers together, and all the variables
0.65x+0.05(-1x+20)-(0.1082)=0
We add all the numbers together, and all the variables
0.65x+0.05(-1x+20)-0.1082=0
We multiply parentheses
0.65x-0.05x+1-0.1082=0
We add all the numbers together, and all the variables
0.6x+0.8918=0
We move all terms containing x to the left, all other terms to the right
0.6x=-0.8918
x=-0.8918/0.6
x=-1+0.2918/0.6
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