1. 5 [tex]\frac{7}{9}[/tex] + 6[tex]\frac{3}{4}[/tex] = [tex]\frac{451}{36}[/tex]
2. 9[tex]\frac{3}{8}[/tex] - 7[tex]\frac{5}{12}[/tex] = [tex]\frac{47}{24}[/tex]
3. [tex]\frac{5}{8}[/tex] - [tex]\frac{5}{11}[/tex] = = [tex]\frac{15}{88}[/tex]
4. 9[tex]\frac{11}{12}[/tex] - 2[tex]\frac{7}{9}[/tex] = [tex]\frac{257}{36}[/tex]
5. 6[tex]\frac{3}{9}[/tex] - 4[tex]\frac{5}{15}[/tex] = 2
Penjelasan dengan langkah-langkah
- Diketahui: Beberapa pecahan campuran
- Ditanya: Tentukan hasil operasi hitungnya!
- Jawab:
Langkah 1
Untuk operasi hitung pecahan campuran, jadikan pecahan tersebut menjadi pecahan biasa terlebih dahulu.
Langkah 2
1. 5 [tex]\frac{7}{9}[/tex] + 6[tex]\frac{3}{4}[/tex]
= {(9 x 5) + 7 = [tex]\frac{52}{9}[/tex] } + {(4 x 6) + 3 = [tex]\frac{27}{4}[/tex] }
= [tex]\frac{208}{36}[/tex] + [tex]\frac{243}{36}[/tex]
= [tex]\frac{451}{36}[/tex]
2. 9[tex]\frac{3}{8}[/tex] - 7[tex]\frac{5}{12}[/tex] = (8 x 9) + 3 = [tex]\frac{75}{8}[/tex]
(12 x 7) + 5 = [tex]\frac{89}{12}[/tex]
= [tex]\frac{75}{8}[/tex] - [tex]\frac{89}{12}[/tex]
= [tex]\frac{225}{24}[/tex] - [tex]\frac{178}{24}[/tex]
= [tex]\frac{47}{24}[/tex]
Langkah 3
3. [tex]\frac{5}{8}[/tex] - [tex]\frac{5}{11}[/tex] = [tex]\frac{55}{88}[/tex] - [tex]\frac{40}{88}[/tex]
= [tex]\frac{15}{88}[/tex]
4. 9[tex]\frac{11}{12}[/tex] - 2[tex]\frac{7}{9}[/tex]
(12 x 9) + 11 = [tex]\frac{119}{12}[/tex]
(9 x 2) + 7 = [tex]\frac{25}{9}[/tex]
= [tex]\frac{119}{12}[/tex] - [tex]\frac{25}{9}[/tex]
= [tex]\frac{357}{36}[/tex] - [tex]\frac{100}{36}[/tex] = [tex]\frac{257}{36}[/tex]
5. 6[tex]\frac{3}{9}[/tex] - 4[tex]\frac{5}{15}[/tex]
(9 x 6) + 3 = [tex]\frac{57}{9}[/tex]
(15 x 4) + 5 = [tex]\frac{65}{15}[/tex]
[tex]\frac{57}{9}[/tex]- [tex]\frac{65}{15}[/tex] = [tex]\frac{285}{45}[/tex] - [tex]\frac{195}{45}[/tex]
= [tex]\frac{90}{45}[/tex] = 2
Pelajari lebih lanjut
Materi tentang pecahan: https://brainly.co.id/tugas/51738372
#BelajarBersamaBrainly #SPJ4
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