Tolong jawab dong pertanyaan ni 5x-3y=15 dan x+y=-10 Tolong bantu ya.. Makasih

5x-3y = 15 ............(1)
x+y    = -10............(2)
.......................................... +
5x- 3y = 15 ............(1) (1x)
3x+3y = -10............(2) (3x)
...............................................-
-3x = -15
x    = -15/-3
x    = 5

Masukkan x kedalam persamaan
5x- 3y = 15
5(5) - 3y = 15
25 - 3y = 15
-3y = 15-25
-3y = -10
y = 10/3 ... 
Centang terbaik ya :)