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13-12-2020
Mathematics

contestada

2х - Зу = 32
x + 4у = -20

solve the system of equations

Respuesta :

13-12-2020

Answer: x=68/11 and y=-72/11

Steps:

2(x+4y=-20)

2x+8y=-40

2x - 3y = 32
- 2x + 8y = -40

-11y=72

y=-72/11

x + 4(-72/11) = -20

x - 288/11 = -20

x=68/11

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