dominicpullinsozkltk dominicpullinsozkltk

17-11-2017
SAT

contestada

3x+4y=23
2y-x=-19
what is the solution (x,y) to the system of equations above?

Respuesta :

Karollina Karollina

22-11-2017

3x+4y=23
2y-x= -19/ multiply -2

4y + 3x = 23
-4y - 2x = 38
_______________
X = 61

2y - x = -19
2y - 61 = -19
2y = 61 -19
2y = 42

Y = 21

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