tolong dibantu ya kak

4. a) 4 : 5 = 16 : p
p = 16(5) / 4
p = 20

b) 3 : 7 = q : 35
q = 35(3) / 4
q = 15

c) 12 : 20 = b : 80
b = 80(12) / 20
b = 48


5. a) 16 : 20 = 24 : ( x + 10)
x + 10 = 20(24) / 16
x + 10 = 30
x = 30 - 10
x = 20

b) 6 : ( x + 1) = 18 : ( 2x + 7 )
6( 2x + 7 ) = 18( x + 1)
12x + 42 = 18x + 18
12x - 18x = 18 - 42
- 6x = - 24
x = -24 / -6
x = 4


Maaf kalo salah