Question

oblicz o kolejności wykonywania działań i skracaniu ułamków 2 1/5*5-4 2/5+1 1/5, 7 1/2-3+2*3/4, 2 1/2*3+4*1 1/2, 2 1/4*2+3 3/4, 9-1 3/5*4.daje naj

Answer 1

dzialania

1) 7 4/5

2) 3

3) 13 1/2

4) 8 1/4

5) 2 3/5

 

Answer 2

2 i 1/5*5-4  i 2/5+1 i 1/5 = 

 

= 11/5 *5 - 4 i 2/5 + 1 i 1/5=

 

= 11/1 * 1 - 4 i 2/5 + 1 i 1/5=

 

= 11- 4 i 2/5 + 1 i 1/5=

 

= 6 i 3/5 + 1 i 1/5=

 

= 7 i 4/5

 

 

 

 

7 i 1/2-3+2*3/4=

 

= 4 i 1/2 + 1 * 3/2 =

 

= 4 i 1/2 + 1 i 1/2=

 

= 5 i 2/2=

 

= 6

 

 

 

 

2  i 1/2*3+4*1 i 1/2 =

 

= 5/2 * 3 + 4 * 3/2=

 

 

= 15/2 + 2 * 3/1 =

 

= 7 i 1/2 + 6/1=

 

= 7 i 1/2 + 6=

 

= 13 i 1/2

 

 

 

 

 

2 i 1/4*2+3 i  3/4 =

 

= 9/4 * 2 + 3 i 3/4=

 

= 9/2 * 1 + 3 i 3/4=

 

= 4 i 1/2 + 3 i 3/4=

 

= 4 i 2/4 + 3 i 3/4=

 

= 7 i 5/4 =

 

= 8 i 1/4

 

 

 

 

9-1 i 3/5*4=

 

= 9 - 8/5 * 4=

 

= 9 - 32/5=

 

= 9 - 6 i 2/5=

 

= 2 i 3/5