joyhelen
joyhelen joyhelen
  • 18-01-2017
  • Mathematics
contestada

3x+2y=2
Y=x-9

A) (4,-5)
B) (4,13)
C) (-5,4)
D) (20,11)

Respuesta :

engy1 engy1
  • 18-01-2017
Y = X - 9
so 3X +2Y = 2
will be 3X +2×(X-9) = 2
3X + 2X -18 = 2
5X = 2 + 18
5X = 20
X = 4
Y = X - 9
Y = 4-9
Y = -5
the answer will be A) (4,-5)
please mark me as brainlest
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