..............................=0
1) 3/7 + 4 23/28=12/28 + 4 23/28=4 35/28=5 7/28=5 1/4
2) 5 1/4 : 1 3/4=147/28 : 7/4=21/4 * 4/7=3
3) 3 3/7 - 5/7=2 10/7 - 5/7=2 5/7
4) 2 5/7 * 21/19=19/7 * 21/19=3
5) 3 - 3=0
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Answers & Comments
..............................=0
1) 3/7 + 4 23/28=12/28 + 4 23/28=4 35/28=5 7/28=5 1/4
2) 5 1/4 : 1 3/4=147/28 : 7/4=21/4 * 4/7=3
3) 3 3/7 - 5/7=2 10/7 - 5/7=2 5/7
4) 2 5/7 * 21/19=19/7 * 21/19=3
5) 3 - 3=0