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21-06-2018
Mathematics

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use the elimination method to solve the system of equations. choose the correct ordered pair

10x + 2y = 22

3x - 4y = -21

A. (1, 6)
B. (2, 5)
C. (5, 4)
D. (3, 8)

Respuesta :

Аноним Аноним

21-06-2018

If we multiply the first equation by 2 and add we eliminate y and get

23x = 23
x = 1

3(1) - 4y = -21
4y = 3 + 21 = 24
y = 6

answer is Choice A

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