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57.49=23.4+7k
We move all terms to the left:
57.49-(23.4+7k)=0
We add all the numbers together, and all the variables
-(7k+23.4)+57.49=0
We get rid of parentheses
-7k-23.4+57.49=0
We add all the numbers together, and all the variables
-7k+34.09=0
We move all terms containing k to the left, all other terms to the right
-7k=-34.09
k=-34.09/-7
k=4+5.5871559633027/6.4220183486238
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