Xangoutht
Xangoutht
23-03-2018
Mathematics
contestada
slove by elimination
Respuesta :
Аноним
Аноним
27-03-2018
Just add the equations and the y-terms will cancel.
-4x + 4y = -16
8x - 4y = 24
SUM
4x = 8
x = 2
plug into one of the equations and solve
-4(2) + 4y = -16
-8 + 4y = -16
4y = -8
y = -2
Answer (2, -2)
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