Числитель:
1. 7-6,35=0,65
2. 0,65:6,5=0,1
3. 0,1+9,9=10
знаменатель:
4. 1,2:36=12/360=1/3
5. 1,2:0,25=4,8
6. 1/3 + 4,8 = 1/3 + 4 8/10= 1/3 + 4 4/5 = 5/15 + 4 12/15 = 4 16/15 = 5 1/15
7. 5 1/15 - 1 5/16 = 5 15/240 - 1 75/240 = 4 255/240 - 1 75/240 = 3 180/240 = 3 18/24 = 3 3/4
8. 3 3/4 : 169/24 = 15/4 * 24/169 = 90/169
9. 10 : 90/169 = 10/1 * 169/90 = 169/9 = 18 7/9