Question

Oblicz,Sprowadzając narpiew ułamki do wspólnego mianownika.
a)9/10 - 3/5=
5/6 - 3/4=
3/4 - 2/9=

b)2 3/10+1/2=
2/3+3 1/6=
2 3/7+3/4=

c)2/3+2 5/9=
2 2/7+1 1/2=
1 5/6+2 3/8=

1 1/5 - 1/2=
1 1/4 - 3/5=
2 2/3 - 3/4=

Answer 1

A) 9/10 - 3/5 = 9/10 - 6/10 = 3/10
    5/6 - 3/4 = 10/12 - 9/12 = 1/12
    3/4 - 2/9 = 27/36 - 8/36= 19/36

b) 2 3/10 + 1/2 = 2 3/10 + 5/10= 2 8/10
    2/3 + 3 1/6 = 4/6 + 3 1/6 = 3 5/6
    2 3/7 + 3/4= 2 12/28 + 21/28 = 2 33/28 = 3 5/28

c) 2/3 + 2 5/9 = 6/9 + 2 5/9 = 2 11/9 = 3 2/9
    2 2/7 + 1 1/2 = 2 4/14 + 1 7/14 = 3 11/14
    1 5/6 + 2 3/8= 1 20/24 + 2 9/24 = 3 29/24 = 4 5/24

d) 1 1/5 - 1/2 = 1 2/10 - 5/10 = 12/10 - 5/10 = 7/10
    1 1/4 - 3/5 = 1 5/20 - 12/20 = 25/20 - 12/20 = 13/20
    2 2/3 - 3/4 = 2 8/12 - 9/12 = 32/12 - 9/12 = 23/12 = 1 11/12