Question

Реши систему уравнений {10x−2y=2−4x+4y=20

{x=
y=
​

Answer 1

10x - 2y = 2

-4x + 4y = 20

y = 5x - 1

- 4x + 4y = 20

y = 5x - 1

- 4x - 4 ( 5x - 1 ) = 20

y = 5x - 1

16x - 24 = 0

y = 5x - 1

x = 1 , 5

y = 6 , 5

x = 1 , 5