Use the matrix tool to solve the system of equations. Choose the correct ordered pair. 7x + 3y = 56 6x + 6y = 72

asked Jun 25, 2016 151k views

4 votes

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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2 votes

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

Qiu Zhou answered Jul 1, 2016

7.7k points

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