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cestrela7 [59]
3 years ago
10

Here are two equations. k= a+b a+b+k=30 What is the value of k?

Mathematics
1 answer:
Rina8888 [55]3 years ago
5 0
(1) k = a + b
(2) a + b + k = 30

subtitute a + b = k to (2)

k + k = 30

2k = 30    |divide both sides by 2

k = 15
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