Question

3/4 *8=
7/12 *16=
1 i 2/9 *4 i 1/11=
2 i 2/3 * 1 i 4/5=

5/7 : 10=
2 i 2/2 :8=
25/34:15/17=
7/9:5/8=
3 i 3/5: 1 i 7/18=
16 i 2/3 :1 i 9/11

Czas do 19:25 dam naj i 30 pkt

Answer 1

3/4 * 8 = 3/4 * 8/1 = 24/4 =6
7/12 * 16 = 7/12 * 16/1 = 112/12 = 9 8/12
1 2/9 * 4 1/11 = 11/9 * 45/11 = 1/1 * 5/1 = 5
2 2/3 * 1 4/5 = 8/3 * 9/5 = 72/15 = 4 12/15 = 4 4/5

5/7 :10 = 5/7 :10/1 = 5/7 * 1/10 = 5/70 = 1/14
2 2/2 : 8 = 3/1 : 8/1 = 3/1 * 1/8 = 3/8
25/34 : 15/17  = 25/34 * 17/15 = 5/2 * 1/3 = 5/6
7/9 : 5/8 = 7/9 * 8/5 = 56/45 = 1 11/45
3 3/5 : 1 7/18 = 18/5 : 25/18 = 18/5 * 18/25 = 324/125 = 2 74/125
16 2/3: 1 9/11 = 50/3 : 20/11 = 50/3 * 11/20 = 5/3 * 11/2 = 55/6 = 9 1/6