2 5/4 - 3 4/9
=13/4 - 31/9
=-(7/36)
3 6/9 - 4 7/5
=33/9 - 27/5
= 11/3 - 27/5
= -26/15
=-1 11/15
5 7/3 - 6 3/7
=25/3 - 45/7
=40/21
= 1 19/21
1.
= 2 5/4 - 3 4/9
= 13/4 - 31/9
= 117/36 - 124/36
= -7/36
2.
= 3 6/9 - 4 7/5
= 33/9 - 27/5
= 55/15 - 81/15
= -(1 11/15)
3.
= 5 7/3 - 6 3/7
= 22/3 - 45/7
= 154/21 - 135/21
= 19/21
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2 5/4 - 3 4/9
=13/4 - 31/9
=-(7/36)
3 6/9 - 4 7/5
=33/9 - 27/5
= 11/3 - 27/5
= -26/15
=-1 11/15
5 7/3 - 6 3/7
=25/3 - 45/7
=40/21
= 1 19/21
1.
= 2 5/4 - 3 4/9
= 13/4 - 31/9
= 117/36 - 124/36
= -7/36
2.
= 3 6/9 - 4 7/5
= 33/9 - 27/5
= 11/3 - 27/5
= 55/15 - 81/15
= -26/15
= -(1 11/15)
3.
= 5 7/3 - 6 3/7
= 22/3 - 45/7
= 154/21 - 135/21
= 19/21