tentukan nilai × dan y 5×-2y=10 dan 4×+3y=31

5x - 2y = 10   (x3)
4x + 3y = 31  (x2)
------------------------
15x - 6y = 30
8x + 6y = 62
---------------------- +
23x = 92
x = 92 / 23
x = 4

5x - 2y = 10
5(4) - 2y = 10
20 - 2y = 10
-2y = 10 - 20
-2y = -10
y = 5

x = 4
y = 5

Semoga bermanfaat yaaaa