monicac3 monicac3
  • 10-03-2017
  • Mathematics
contestada

11c - 2d = -2
c + 8d = 8
using the substitution method

Respuesta :

wolf1728
wolf1728 wolf1728
  • 10-03-2017
A) 11c - 2d = -2
B) c + 8d = 8
B) c  = 8 - 8d then substitute this into A)

A) 88 -88d - 2d = -2
A) 90 = 90d
d = 1
c = 0
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