7. 8% : 2/9=
8.0,3 : 4/5=
9.6/5 : 1,5=
10.4/9 : 20%=
tolong yaaa
ubah pecahan desimal menjadi pecahan biasa dlu yaa
pke cara
Jawaban:
1) 5\frac{7}{9}5
9
7
+ 6\frac{3}{4}6
4
3
= \frac{52}{9}
9
52
+ \frac{27}{4}
4
27
= \frac{208}{36}
36
208
+ \frac{243}{36}
36
243
= \frac{451}{36}
36
451
= 12 \frac{19}{36}
36
19
2) 9\frac{3}{8}9
8
3
+ 7\frac{5}{12}7
12
5
= \frac{75}{8}
8
75
+ \frac{89}{12}
12
89
= \frac{225}{24}
24
225
+ \frac{178}{24}
24
178
= \frac{403}{24}
24
403
= 16 \frac{19}{24}
24
19
3) \frac{5}{8}
8
5
- \frac{5}{11}
11
5
= \frac{5}{8}
8
5
- \frac{5}{11}
11
5
= \frac{55}{88}
88
55
- \frac{40}{88}
88
40
= \frac{15}{88}
88
15
4) 9\frac{11}{12}9
12
11
- 2\frac{7}{9}2
9
7
= \frac{119}{12}
12
119
- \frac{25}{9}
9
25
= \frac{357}{36}
36
357
- \frac{100}{36}
36
100
= \frac{257}{36}
36
257
= 7 \frac{5}{36}
36
5
5) 6\frac{3}{9}6
9
3
- 4\frac{5}{15}4
15
5
= \frac{57}{9}
9
57
- \frac{65}{15}
15
65
= \frac{285}{45}
45
285
- \frac{195}{45}
45
195
= \frac{90}{45}
45
90
= 2
Penjelasan dengan langkah-langkah:
maffa kalau salah
No 7
Ubah persen kedalam pecahan biasa :
[tex]8\% = \frac{8}{100} = \frac{8 \div 4}{100 \div 24} = \frac{2}{5} [/tex]
Maka :
[tex]8\% \div \frac{2}{9} = \frac{2}{5} \div \frac{2}{9} = \frac{2}{5} \times \frac{9}{2} = \frac{18 \div 2}{10 \div 2} = \frac{9}{5} = 1 \frac{4}{5} [/tex]
No 8
Pecahan desimal ke pecahan biasa :
[tex]0,3 = \frac{3}{10} [/tex]
Maka :
[tex]0,3 \div \frac{4}{5} = \frac{3}{10} \div \frac{4}{5} = \frac{3}{10} \times \frac{5}{4} = \frac{15 \div 5}{40 \div 5} = \frac{3}{8} [/tex]
No 9
Ubah desimal ke pecahan biasa :
[tex]1,5 = \frac{15 \div 5}{10 \div 5} = \frac{3}{2} [/tex]
Maka :
[tex] \frac{6}{5} \div 1,5 = \frac{6}{5} \div \frac{3}{2} = \frac{6}{5} \times \frac{2}{3} = \frac{12 \div 3}{15 \div 3} = \frac{4}{5} [/tex]
No 10
Ubah persen ke pecahan biasa :
[tex]20\% = \frac{20}{100} = \frac{20 \div 20}{100 \div 20} = \frac{1}{5} [/tex]
Maka :
[tex] \frac{4}{9} \div 20\% = \frac{4}{9} \div \frac{1}{5} = \frac{4}{9} \times \frac{5}{1} = \frac{20}{9} = 2 \frac{2}{9} [/tex]
[answer.2.content]
