SOLUTION: -12d - 7e = 48 5d + e = 3 What is the value of d?

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Question 1072178: -12d - 7e = 48
5d + e = 3

What is the value of d?



Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
-12d - 7e = 48
5d + e = 3; e=-5d+3
-12d-7(-5d+3)=48
23d-21=48
23d=69
d=3
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-36-7e=48
-7e=84
e=-12
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Check in last equation
5(3)-12=3 which checks
d is 3