Bg tolong jawab sekarang y...

a)...

6/8 = 3/x
x= 3.8÷6
= 24 ÷ 6
x= 4

b)..
(1) 15/20 = x1/16
x1= 16.15÷20
= 240÷20
x1= 12

(2) 9/y = 12/6
y=9.16÷12
= 144÷12
y= 12

(3) 9/12 = 6/x
x=6.12÷9
= 72 ÷9
x= 8