Question

oblicz : 2 2/3 - 1 4/5 1 2/6 - 2/3 2 1/4 - 1 6/8 3 1/3 - 2 10/15

PS: ,, / '' znaczy kreskę ułamkową

Answer 1

2 2/3 - 1 1/4 = 2 20/30 - 1 24/30 = 1 50/30 - 1 24/30 = 26/30 = 13/15

1 2/6 - 2/3 = 1 2/6 - 4/6 = 8/6 - 4/6 = 4/6 = 2/3

2 1/4 - 1 6/8 = 2 2/8 - 1 6/8 = 1 10/8 - 1/68 = 4/8 = 1/2

3 1/3 - 2 10/15 = 3 5/15 - 2 10/15 = 2 20/15 - 2 10/15 = 10/15 = 2/3

 

Mam nadzieję, że pomogłam. 

Answer 2

2 2/3 - 1 1/4 = 8/3 - 9/5 = 40/15 - 27/15 = 13/15

1 2/6 - 2/3 = 8/6 - 4/6= 4/6 = 2/3

2 1/4 - 1 6/8 = 18/8 - 14/8= 4/8 = 1/2

3 1/3 - 2 10/15 =  10/3 - 8/3 = 2/3