ada yg tau jawabannya?????????????? tlng dibantu yaàaaaaaa

1) 3
2) 36
Maaf klo salah

1. 6/20 = m/10
= 20m = 6 . 10
= m = 6 . 10/20
m = 3

2. 12/a = 6/18
= 6a = 12 . 18
a = 12 . 18/6
a = 12 . 3
a = 36

3. 36/720 = 48/y
= 36y = 720 . 48
y = 720 . 48/36
y = 20 . 48
y = 960

4. 4/12 = 6/b
= 4b = 12 . 6
b = 12 . 6 : 4
b = 3 . 6
b = 18