____________________tolong dijawab secepatnyapakai cara​

Jawab:

4x – y = -5

x + 3y = -11

4x – y = -5

4x + 12y = -44

———————- –

-13y = -39

y = 3

4x – 3 = -5

4x = -5 + 3

4x = -2

x = 2

300x -100y = 300 x 2 – 100 x 3

= 600 – 300

= 300 (C)