Chenaayesenia
Chenaayesenia
10-12-2020
Mathematics
contestada
7x+y=-9 -3x-y=5 solve by elimination
Respuesta :
meowmeow223334
meowmeow223334
10-12-2020
7x + y = -9
-3x - y = 5
Add them together
4x = -4, x = -1
7(-1) + y = -9
-7 + y = -9, y = -2
Solution: x = -1, y = -2
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