B. Mari menentukan hasil pengurangan pecahan-pecahan berikut ini

7.
[tex] \frac{5}{36} [/tex]
8.
[tex] \frac{7}{60} [/tex]
9.
[tex] \frac{3}{20} [/tex]
10.
[tex] \frac{2}{21} [/tex]
11.
12.
[tex] \frac{8}{75} [/tex]

7) 5/9 - 5/12 = 20/36 - 15/36
= 5/36.

8) 5/12 - 2/15 = 25/60 - 8/60
= 17/60.

9) 7/10 - 11/20 = 14/20 - 11/20
= 3/20.

10) 6/7 - 16/21 = 18/21 - 16/21
= 2/21.

11) 19/21 - 5/16 = 304/336 - 105/336
= 231/336 = 11/16 (karna di÷21).

12) 21/25 - 11/15 = 63/75 - 55/75
= 8/75.



Maaf klo salah