12 2/3 - 7 4/8 + 2 2/5 = n

12 2/3 - 7 4/8 + 2 2/5
= 38/3 - 60/8 + (12/5)
= 304-180/24 + 12/5
= 124/24 + 12/5
= 31/6 + 12/5
= 155+72/30
= 227/30
= 7 17/30

Mapel       : Matematika
Kategori   : Bangun Ruang
Kelas        : Sekolah Menengah Pertama/ MTs
Semester : Ganjil


Pembahasan:
[tex]12 \frac{2}{3} - 7 \frac{4}{8} +2 \frac{2}{5} [/tex]
[tex]\frac{38}{3}-  \frac{60}{8} + \frac{12}{5} [/tex]
[tex] \frac{304-180+57,6}{24}[/tex]
[tex] \frac{181,6}{24} [/tex]
[tex] \frac{1816}{240} [/tex]
[tex]7 \frac{136}{240} [/tex]
[tex]7 \frac{17}{30} [/tex]