kiraD123
kiraD123
17-12-2020
Mathematics
contestada
-7x-y=13 and 8x+y=-14 solve by substitution
Respuesta :
yasmitadp
yasmitadp
18-12-2020
Answer:
Step-by-step explanation:
Add the 2 equations
-7x+8x = 13-14
x=-1
7-y=13
-y = 6
y=-6
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