Пошаговое объяснение:
3/4+5/7= 21/28 + 20/28 = 41/28 = 1 13/28
11/12-2/3= 11/12 - 8/12 = 3/12 = 1/4
5 9/14-1 3/4= 5 18/28 - 1 21/28 = 3 25/28
2 7/25+1,3= 2,28 + 1,3 = 3,58
1) 3/4+5/7=21/28+20/28=41/28=1 13/28
2)11/12-2/3=11/12-8/12=3/12=1/4=0,25
3)5 9/14-1 3/4=4 23/14-1 3/4=4 46/28-1 21/28=3 25/28
4)2 7/25+1,3=2 14/50+65/50=2 79/50=3,58
Пошаговое объяснение:
3/4+5/7= 21/28 + 20/28 = 41/28 = 1 13/28
11/12-2/3= 11/12 - 8/12 = 3/12 = 1/4
5 9/14-1 3/4= 5 18/28 - 1 21/28 = 3 25/28
2 7/25+1,3= 2,28 + 1,3 = 3,58
1) 3/4+5/7=21/28+20/28=41/28=1 13/28
2)11/12-2/3=11/12-8/12=3/12=1/4=0,25
3)5 9/14-1 3/4=4 23/14-1 3/4=4 46/28-1 21/28=3 25/28
4)2 7/25+1,3=2 14/50+65/50=2 79/50=3,58
Пошаговое объяснение: