SOLUTION: c-5d=2 2c+d=4

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Question 179038This question is from textbook glencoe mathematics
: c-5d=2
2c+d=4 This question is from textbook glencoe mathematics

Answer by monika_p(71) About Me  (Show Source):
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c-5d=2 / multiply by -2
2c+d=4
-2c+10d=-4
2c+d=4
--------- add two equations
11d=0
d=0
then from first equation:
c=2-5d
substitute for d=0
c=2-5*0
c=2
Answer:
c=2
d=0