livvydevins3 livvydevins3

30-05-2020
Mathematics

contestada

Solve algebraically
x-4y=-10
x+y=5

Respuesta :

dudibakytbekovich dudibakytbekovich

30-05-2020

Answer:

if x+y=5, then x=5-y

so x-4y=-10

5-y-4y=-10

5-5y=-10

-5y=-15

y=3

x=5-y

x=5-3

x=2

x=2; y=3

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