Brantleysmommy26 Brantleysmommy26

17-02-2017
Mathematics

contestada

Tell whether the ordered pair is a solution of the system of linear equations. Explain. (3 , 4) x + y = 7 x – 2y = -5

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wolf1728 wolf1728

17-02-2017

A) x + y = 7
B) x – 2y = -5
Multiplying equation A by 2
A) 2x + 2y = 14 then adding it to B
B) x -2y = -5
3x = 9
x = 3
y = 4
So, (3,4) is a solution.

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