Question

Oblicz i doprowadź do najprostszej postaci.
1) 12*4/9*6=
2) 7*15/22=
3) 4/7:3/4=
4) 2 1//4*5 2/7=
5) 2 1/9:1 1/4=
6) (3 2/3)[2]: (2 2/5)[2]=
7) 5 3/4* 1/3+ 2 1/8*4=

Proszę o całe działanie :)

*[2] - ... do kwadratu

Answer 1

1)
12 * 4/9 * 6 = 12 * 6/9 = 12 * 2/3 = 4 * 2 = 8
2)
7 * 11/22 = 77/22 = 3 11/22 = 3 1/2
3)
4/7 : 3/4 = 4/7 * 4/3 = 16/21
4)
2 1/4 * 5 2/7 = 9/4 * 37/7 = 333/28 = 11 15/28
5)
2 1/9 : 1 1/4 = 19/9 * 4/5 = 76/45 = 1 31/45
6)
(3 2/3)² : (2 2/5)² = (11/3)² : (12/5)² = 121/9 : 144/25 = 121/9 * 25/144 =
= 3025/1296 = 2 433/1296
7)
5 3/4 * 1/3 + 2 1/8 * 4 = 23/4 * 1/3 + 17/8 * 4 = 23/12 + 34/4 = 23/12 + 102/12 =
= 125/12 = 10 5/12