Question

Z 7 str 165
9x1 i 5/12
4 i 5/6 : 3
2 i 5/12 : 4
3 i 1/5 : 6
1 i 3/16 : 10
z 8
3 i 1/5 liczby 20
1 i 1/16 liczby 32
4 i 3/8 liczby 10

Answer 1

9x1 i 5/12 =
= 9 * 17/12 = 3 * 17/4 = 51/4 = 12 3/4

4 i 5/6 : 3 = 29/6 * 1/3 = 29/18 = 1 11/18

2 i 5/12 : 4 = 29/12 * 1/4 = 29/48

3 i 1/5 : 6 = 16/5 * 1/6 = 8/5 * 1/3 = 8/15

1 i 3/16 : 10 = 19/16 * 1/10 = 19/160

z 8 ???
3 i 1/5 liczby 20 = 16/5 * 20 = 16 * 4 = 64
 
1 i 1/16 liczby 32
17/16 * 32 = 17 * 2 = 34

4 i 3/8 liczby 10
35/8 * 10 = 35/4 * 5 = 175/4 = 43 3/4

Answer 2

Zad 7.

9 *1 i 5/12=

= 9 * 17/12=

= 3 * 17/4 =

= 51/4=

= 12 i 3/4





4 i 5/6 : 3=

= 29/6 * 1/3=

= 29/18=

= 1 i 11/18



2 i 5/12 : 4=

= 29/12 * 1/4 =

= 29/48




3 i 1/5 : 6=

= 16/6 * 1/6=

= 8/6 * 1/3=

= 24/18=

= 1 i 6/18=

= 1 i 1/3



1 i 3/16 : 10=

= 19/16 * 1/10=

= 19/160




zad 8

3 i 1/5 liczby 20

3 i 1/5 * 20 =

= 16/5 * 20 =

= 16/1 * 4=

= 64/1=

= 64




1 i 1/16 liczby 32

1 i 1/16 * 32=

= 17/16 * 32=

= 17/1 * 2=

= 34/1 =

= 34




4 i 3/8 liczby 10

4 i 3/8 * 10 =

= 35/8 * 10 =

= 35/4 * 5=

= 175/4=

= 43 i 3/4