SOLUTION: 20= 4b/7 - (-8) thanks!

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Question 646957: 20= 4b/7 - (-8)
thanks!
Answer by colliefan(242) About Me  (Show Source):
You can put this solution on YOUR website!
20= 4b/7 - (-8)
20-8 = 4b/7 + 8 - 8
12 * 7 = 4b/7 * 7
84 = 4b
21=b
b=21
Substitute 21 into the original equation to make sure it is a solution.