Question

oblicz? :

*= razy

a )2 1/3 *3/4+ 5 3/8: 5 1/2 =

b )2 2/5 +1 2/3 +1 2/3* 9/10=

c )9 1/2- 3 1/3* 1 4/5=

d)5/9 - 3/10 : 1 4/5=

e) 2 2/3:1 3/5+(4 1/2* 1 2/3- 3 3/4)=

f) 10:(2 3/4 - 1/2*1 1/2)=

???

Answer 1

 a )2 1/3 *3/4+ 5 3/8: 5 1/2 = 7/3 * 3/4 + 43/8 : 11/2= 7/4 + 43/8* 2/11=7/4 + 43/44=

77/44+43/44=120/44= 30/11= 2 8/11

 

b )2 2/5 +1 2/3 +1 2/3* 9/10=2 2/5 + 1 2/3 +18/5= 2 6/15 + 1 10/15 + 54/15=             3  70/15= 7 10/15= 7 2/3

 

c )9 1/2- 3 1/3* 1 4/5= 9 1/2 - 10/3 * 9/5= 9 1/2  + 6 = 15 1/2

 

d)5/9 - 3/10 : 1 4/5= 5/9 - 3/10 : 9/5=  5/9 - 3/10 * 5/9=5/9-1/6= 10/18- 3/18              = 7/18

 

e) 2 2/3:1 3/5+(4 1/2* 1 2/3- 3 3/4)=8/3 : 8/3 + (9/2 * 5/3 - 3 3/4)=

8/3 * 3/8 + (15/2 - 3 3/4)= 1 + 7 1/2 - 3 3/4 = 1 + 7 2/4- 3 3/4=

1 + 6 6/4 - 3 3/4= 7 6/4- 3 3/4= 4 3/4

 

f) 10:(2 3/4 - 1/2*1 1/2)= 10: ( 2 3/4 - 1/2 * 3/2)= 10:( 2 3/4 - 3/4)= 10: 2= 5