Question

Oblicz ;

(1 1/3 ) do potegi 3

2 3/5 * 10/15

7 3/5 +4 5/7

12; 2 2/5 - 3 1/3

4 1/6 - 8 3/4 ; 7

(2/5 + 1/2 ) * 2/15

PLISSS

Answer 1

a) 1 1/3 do potędi 3= 4/3 do poeegi 3 = 64/27

b)2 3/5 * 10/15 =  13/5 * 10/15 = 26/15

c) 7 3/5 +4 5/7 = 7 21/35+ 4 25/35= 11 46/35 = 12 11/35

d)12; 2 2/5 - 3 1/3= 1/12 * 12/5 - 3 1 /3 = 5 - 3 1/3 =1 2/3

e) 4 1/6 - 8 3/4 ; 7 = 4 1/6 - 35/4 * 1/7 = 4 1/6 - 5/4 = 3  7/6 - 5/4= 3  14/12 - 1 3/12= 2 11/12

f) (2/5 + 1/2 ) * 2/15= ( 4/10 + 5/10) * 2/15= 9/10 * 2/15= 3/ 25

 

Answer 2

(1 1/3 ) do potegi 3 = (4/3)³ = 64/27 = 2 10/27

2 3/5 * 10/15 = 13/5 * 10/15 = 26/15 = 1 11/15

7 3/5 +4 5/7 = 38/5 + 33/7 = 266/35 + 165/35 = 431/35 = 12 11/35

12; 2 2/5 - 3 1/3 = 12 : 12/5 - 10/3 = 12 * 5/12 - 10/3 = 5 - 10/3 = 15/3 - 10/3 = 5/3 = 1 2/3

4 1/6 - 8 3/4 ; 7 = 25/6 - 35/4 * 1/7 = 25/6 - 5/4 = 50/12 - 15/12 = 35/12 = 2 11/12

(2/5 + 1/2 ) * 2/15 = (4/10 + 5/10) * 2/15 = 9/10 * 2/15 = 3/25