Question

Tolong sama caranya ya kak​

Answer 1

Misal bilangannya a dan b

a + b = 38 -> b = 38 - a

2a - b = 13

2a - (38-a) = 13

3a - 38 = 13

3a = 51

a = 17

b = 38 - a = 38 - 17 = 21

selisih =

21 - 17 = 4