youngthugg95 youngthugg95
  • 12-09-2015
  • Mathematics
contestada

Use the matrix tool to solve the system of equations. Choose the correct ordered pair.

7x + 3y = 56 
6x + 6y = 72 

Respuesta :

michelleshie michelleshie
  • 12-09-2015
( 7x + 3y = 56 ) × 2
14x + 6y = 112
6x + 6y = 72
__________ -
8x = 40
x = 5
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