Babyk218 Babyk218

05-02-2021
Mathematics

contestada

4) -3x - 2y = -17
9x + 2y = 23
A) (1,7)
B) (10,7)
C) (5, 7) D) (-7, 7)

Respuesta :

Anisatunizzati Anisatunizzati

06-02-2021

Answer:

A). (1, 7)

Step-by-step explanation:

-3x – 2y = -17

9x + 2y = 23

____________+

6x = 6

x = 6/6

x = 1

9x + 2y = 23

9(1) + 2y = 23

9 + 2y = 23

2y = 23 - 9

2y = 14

y = 14/2

y = 7

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