zay345
zay345
11-05-2017
Mathematics
contestada
3x+y=5 2x-2y=-2 elimination
Respuesta :
Helper512
Helper512
11-05-2017
3x + y = 5
2x - 2y = -2
6x + 2y = 10
2x - 2y = -2
add
8x = 8, x = 1
plug in x into first equation
3(1) + y = 5, 3 + y = 5, y = 2
Ans: x = 1, y = 2
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