Question

2х + y = 5
Зу = 15 – бх

Answer 1

x = 0

y = 5

Explanation:

2x + y = 5 --------(i)

y = 5 -2x

Plug in y = 5-2x in 3y = 15 - 6x

3*(5-2x) = 15 - 6x

3*5 - 3*2x = 15 - 2x

15 - 6x = 15-2x

-6x = 15 - 2x - 15

-6x = -2x

-6x + 2x = 0

-4x = 0

x = 0

Substitute x = 0 in equation (i)

2*0 + y = 5

0 + y = 5

y = 5