15-03-2020
Mathematics

contestada

which of these systems of equations has a solution of (6,-7)?
A.x-2y=20
2x-y=19
b.x-2y=20
2x+y=19
c.x+2y=20
2x-y=19
d.x+2y=20
2x+y=19

Respuesta :

211247Adi 211247Adi

15-03-2020

Answer:too many words

Step-by-step explanation:

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