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

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michelleshie michelleshie

12-09-2015

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

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