mohon bantuannya kak,pleeaasss

1. 4 + m = 11
m = 11 - 4
= 7
2. 8 = a + 3
a = 8 - 3
= 5
3. x - 9 = 20
x = 20 + 9
= 29
4. 13 = p - 4
p = 13 + 4
17

Maaf kalo salah