Question

Oblicz:

3,2:(0,8- 2/5)=

2 1/7*(6,25+2 1/2)=

(6,5-4,7):1 4/5=

4,4- 2/3* 1,8=

2 5/8 : x = 1,4

y: 0,11=2 2/11

z-3 1/3= 3,3

Answer 1

3,2:(0,8- 2/5)=3,2:(4/5-2/5)=3 1/5:2/5=16/5*5/2=8

 

2 1/7*(6,25+2 1/2)=2 1/7*(6 1/4+2 1/2)=2 1/7*(6 1/4+2 2/4)=2 1/7*8 3/4=15/7*35/4=18 3/4

 

(6,5-4,7):1 4/5=1,8:1 4/5=1 4/5:1 4/5=9/5:9/5=9/5*5/9=1

 

4,4- 2/3* 1,8=4,4- 2/3* 1 4/5=4,4- 2/3*9/5=4,4-6/5=4 2/5-1 1/5=3 1/5

 

2 5/8 : x = 1,4

x=1,4*2 5/8

x=1 2/5 * 2 5/8

x= 7/5*21/8

x=147/40

x= 3,675

 

y: 0,11=2 2/11

y=2 2/11*0,11

y=23/11*11/100

y=23/100

y=0,23

 

z-3 1/3= 3,3

z=3,3+3 1/3

z=3 3/10+3 1/3

z=3 9/30+ 3 10/30

z=6 19/30