Pomocy w 5,6 i 7 zad plz!! Szybkooo na jutro!!!!! Daje NAY!Szybko pliss!

Zadanie 5 3 1/3 : 1 x 3/10 = 10/3 x 1 x 3/10 = 1 4 7/9 : 5 3/7 x 0 = 0 (cyfry czy ułamki mnożone przez 0 zawsze dają 0) 1: 5/8 x 5/8 = 1/1 x 8/5 x 5/8 = 1 Zadanie 6 a) 5/9 x 3/12 x 3/10 = (po skróceniu) 1/1 x 1/12 x 1/2 = 1/24 b) 5/16 : 12/5 x 8/25 = 5/16 x 5/12 x 8/25 = (po skróceniu) 1/2 x 1/12 x 1/1 = 1/24 c) 10/21 x 1/5 : 16/7 = 10/21 x 1/5 x 7/16 = (po skróceniu) 1/3 x 1/1 x 1/8 = 1/24 d) 7/18 x 15/24 x 6/35 = (po skróceniu) 1/3 x 1/8 x 1/1 = 1/24 Zadanie 7 (7 - 5 2/5) x 1/4 = (6 5/5 - 5 2/5) x 1/4 = 1 3/5 x 1/4 = 8/5 x 1/4 =2/5 (7/9 - 47/72) : 1 1/4 = (56/72 - 47/72) : 5/4 = 9/72 x 4/5 = 1/8 x 4/5 = 1/10 6 x (1 1/3)² = 6 x (4/3 x 4/3) = 6/1 x 16/9 = (po skróceniu) 16/3 x 2/1 = 32/3 = 10 2/3 (5/7)² : 5/7 = 5/7 x 5/7 x 7/5 = 5/7 (1/3 - 1/4)² = (4/12 - 3/12)² = 1/12² = 1/144 (2/5)² + 4 1/2 x 2 2/3 = 4/25 + 9/2 x 8/3 = 4/25 + (po skróceniu) 12/1 = 4/25 + 300/25 = 304/25 = 12 4/25 5 x (1/2)² + 15 x (1/3)² = 5/1 x 1/4 + 15/1 x 1/9 = 5/4 + 15/9 = 45/36 +60/36 = 105/36 = 2 33/36 = 2 11/12 1/9 - (5/6 - 2/3)² = 1/9 - (5/6 - 4/6)² = 1/9 - (1/6)² = 1/9 - 1/36 = 4/36 - 1/36 = 3/36 = 1/12