usman457
usman457 usman457
  • 08-08-2016
  • Mathematics
contestada

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

Respuesta :

dalendrk
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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