Question

2. Oblicz:
1. {1 1/8 - 1/2} * {3/5 + 1/3} =
2. 1 1/5 * 1 2/3 * 1/7 + {1 1/7} do potęgi 2 =
3. 2 3/5 : {0,25 + 1/8 : 0,125} =

Answer 1

Odpowiedź:

1.(1 1/8 - 1/2) * (3/5+1/3) = 7/12

2. 1 1/5 * 1 2/3 * 1/7 + ( 1 1/7) = 1 29/49²

3. 2 3/5 : ( 0.25 + 1/8 : 0.125) = 2 2/25

Chyba tak ale nie jestem pewna

Answer 2

Odpowiedź:

1.

{1 1/8 - 1/2} * {3/5 + 1/3} =  (9/8 - 4/8) * (9/15 + 5/15) = 5/8 * 14/15 = 1/4 * 7/3 = 7/12

2.

1 1/5 * 1 2/3 * 1/7 + {1 1/7}² =  6/5 * 5/3 * 1/7 + (8/7)² = 2 * 1/7 + 64/49 =

= 2/7 + 1 15/49 = 14/49 + 1 15/49 = 1 29/49

3.

2 3/5 : {0,25 + 1/8 : 0,125} = 13/5 : (1/4 + 1/8 : 1/8) = 13/5 : (1/4 + 1/8 * 8) =

= 13/5 : (1/4 + 1) = 13/5 : 1 1/4 = 13/5 : 5/4 = 13/5 * 4/5 = 52/25 = 2 2/25

Szczegółowe wyjaśnienie: