usman457 usman457

08-08-2016
Mathematics

contestada

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

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dalendrk dalendrk

08-08-2016

(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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