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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