Question

2x + y = 9, 8x - 3y = 29

Answer 1

Método: Sustitución

{2x + y = 9

{8x - 3y = 29

{y = 9 - 2x

{8x - 3y = 29

8x - 3(9 - 2x) = 29

8x - 27 + 6x = 29

14x - 27 = 29

14x = 29 + 27

14x = 56

x = 4

y = 9 - 2 × 4

y = 9 - 8

y = 1

(x, y) = (4, 1)

Besitos OvO