Question

Si: 3x – 2y = 5
2x + 4y = 14
Calcular: E = x . y

Answer 1

Respuesta:

E = 6

Explicación paso a paso:

3x – 2y = 5...(1)

2x + 4y = 14➡️x+2y=7...(2)

Sumamos ecuaciones (1) y (2)

3x – 2y = 5

x + 2y = 7

4x = 12

x = 12/4

x = 3

x +2y= 7

3 +2y=7

2y = 7-3

2y = 4

y = 4/2

y = 2

E = xy

E = 3×2

E = 6