SOLUTION: How do I solve the following: 1. 5(a+b)=21 for a=15 and b= -27

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Question 896394: How do I solve the following:
1. 5(a+b)=21 for a=15 and b= -27
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

5%28a%2Bb%29=21 ...plug in a=15 and b=+-27

5%2815%2B%28-27%29%29=21
5%2815-27%29=21
5%28-12%29=21
-60=21....since -60%3C%3E21, a=15 and b=+-27 does not satisfy the original equation