samcolin979 samcolin979

11-11-2020
Mathematics

contestada

X-4y=15 and 8x-5y=42

Respuesta :

gardnerdanj gardnerdanj

11-11-2020

Answer:

y=-2 8/9

x=31 1/2

Step-by-step explanation:

x-4y=15 --> x=4y+15

8x-5y=42

8(4y+15)-5y = 42

32y +120 - 5y = 42

27y = -78

y=-2 8/9

x=31 1/2

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