Himpunan persamaan system 4x + y = -10 dan 2x - 5y = -16 adalah Mohon bantuan

jawab

4x + y = -10 
2x - 5y = -16 ..}kali 2

4x + y = -10
4x -10y = - 32...|(-)

11 y = 22
y = 2

4x + y = -10
4x + 2 = -10
4x = - 12
x = - 3

(x,y)= (-3, 2)