Question

w zadaniu tylko przykład J , a w 2 to wszystkie przykłady . proszę obliczcie to

Answer 1

zadanie1.

j) 4,5 * 5 5/9 + 6,4 * 3/8 =

4 5/10 * 50/9 + 6 4/10 * 3/8 =

45/10 * 50/9 + 64/10 * 3/8 =

9/2 * 50/9 + 32/5 * 3/8 =

25 + 12/5 = 125/5 + 12/5 = 137/5 = 27 2/5

 

zadanie2.

a) (5/6 + 1/3) : (2 2/3 - 1,75)=

(5/6 + 2/6): ( 8/3 - 1 3/4) =

7/6 : (8/3 - 7/4) = 

7/6 : (32/12 - 21/12) =

7/6 : 11/12 = 7/6 * 12/11 = 14/11 = 1 3/11

 

b) 1 1/2 : [(1 1/4 : 1 2/3) : 1 1/5] = 

3/2 : [ (5/4 : 5/3) : 6/5] =

3/2 : [(5/4 * 3/5) * 5/6] =

3/2 : (3/4 * 5/6)=

3/2 : 5/8 = 3/2 * 8/5 = 12/5 = 2 2/5

 

c) 17/40- 0,2 // 1 3/5 =

17/40 - 2/10  // 8/5 = 

17/40 - 8/40 // 8/5 =

9/40 * 5/8 = 9/64

 

d) (3 3/5 - 2) * 5 // 0,04 =

(18/5 - 2) *5 // 4/100 =

(18/5 - 10/5) * 5 // 4/100=

8/5 * 5 // 4/100 =

8 * 100/4 = 200

 

e) 4 3/8 // ( 1 5/8 - 0,75) =

35/8  // (13/8 - 3/4) = 

35/8  // (13/8 - 6/8) = 

35/8 // 7/8 =

35/8 * 8/7 = 5