aya4 aya4
  • 25-01-2015
  • Mathematics
contestada

4x+7y=19
y=x+9
what is the coordinates?

Respuesta :

ar3950 ar3950
  • 25-01-2015
4x+7(x+9)=19
4x+7x+63=19
11x=-44
x=-4
y=-4+9
y=5

(-4,5)
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