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0.003(9-k)+0.05(k-3)=1
We move all terms to the left:
0.003(9-k)+0.05(k-3)-(1)=0
We add all the numbers together, and all the variables
0.003(-1k+9)+0.05(k-3)-1=0
We multiply parentheses
-0.003k+0.05k+0.027-0.15-1=0
We add all the numbers together, and all the variables
0.047k-1.123=0
We move all terms containing k to the left, all other terms to the right
0.047k=1.123
k=1.123/0.047
k=23+0.042/0.047
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