1. 2/4 = a/8 2. 3/b = 9/15 3. c/20 = 5/4 4. 5/6 = 30/d 5. 14/6 = e/3 tolong ya beserta cara

Please, let me answer your question :)
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Mapel : Matematika
Tentang : Pecahan
Pembahasan :

Nomor 1 :

[tex] \frac{2}{4} = \frac{a}{8} \\ \\ 4a = 16 [/tex]

[tex]a = \frac{16}{4} = 4[/tex]

Nomor 2 :

[tex] \frac{3}{b} = \frac{9}{15} \\ \\ 9b = 45[/tex]

[tex]b = \frac{45}{9} = 5[/tex]

Nomor 3 :

[tex] \frac{c}{20} = \frac{5}{4} \\ \\ 4c = 100[/tex]

[tex]c = \frac{100}{4} = 25[/tex]

Nomor 4 :

[tex] \frac{5}{6} = \frac{30}{d} \\ \\ 5d = 180[/tex]

[tex]d = \frac{180}{5} = 36[/tex]

Nomor 5 :

[tex] \frac{14}{6} = \frac{e}{3} \\ \\ 6e = 42[/tex]

[tex]e = \frac{42}{6} = 7[/tex]

Caranya adalah dikali silang. Setelah itu lakukan pemindahan ruas.

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1. 2/4=a/8
1/2=a/8
2a=8
a=8/2=4

2. 3/b=9/15
3/b=3/5
3b=15
b=15/3=5

3. c/20=5/4
4c=100
c=100/4=25

4. 5/6=30/d
5d=180
d=180/5=36

5. 14/6=e/3
7/3=e/3
3e=21
e=21/3=7