anastasia0829 anastasia0829

06-10-2020
Mathematics

contestada

Solve the following system of equations.
(15 Points)
x + 3y = -5 & 5y - 10 = -20x

Respuesta :

Kandake Kandake

27-07-2021

Answer:

( 1 ; -2 )

Step-by-step explanation:

x + 3y = -5..............1

5y - 10 = -20x........2

x = -5 - 3y..............3

5y - 10 = -20( -5 - 3y)

5y - 10 = 100 + 60y

-55y = 110

y = -2

x = 1

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