Question

{x+y=12
{1,50x+2,00y=22

Answer 1

x + y = 12 *(-2)

1,5x + 2y = 22

-2x - 2y = -24

1,5x + 2y = 22

-0,5x = -2

x = 2/0,5

x = 4

1,5x + 2y = 22

1,5*(4) + 2y = 22

6 + 2y = 22

2y = 22 - 6

2y = 16

y = 16/2

y = 8

(4, 8)