hasil dari 3/b=9/15 c/20=5/4 5/6=30/d e/15=1/3 skalian cara nya donk

3/b = 9/15
9b=3×15
9b= 45
b= 45/9
b= 5

c/20=5/4
4c=20×5
c=100/4
c=25

5/6=30/d
5d=30×6
d=180/5
d=36

e/15=1/3
3e=15
e=15/3
e=5

Caranya dengan cara silang
3/b = 9/15 = (3 x 15) : 9 =45 : 9 = 5 =b = 5
c/20 = 5/4 = (20 x 5 ) : 4=100 : 4= 25 =c =25
5/6 = 30/d =(6 x 30) : 5=180 : 5 = 36= d = 36
e/15 = 1/3 = ( 15 x 1 ) : 3 = 15 : 3 = 5 = e= 5
Semoga Membantu..Jadi kan yang terbaik yaa..