Вычислите 3 6/7 * (-2 1/3) - 8/9 * (-1 7/8) ; (-8 3/8 + 7 1/6) * (-2 14/29) ;

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Математика

Толяна

17 мая, 20:15

Вычислите 3 6/7 * (-2 1/3) - 8/9 * (-1 7/8) ; (-8 3/8 + 7 1/6) * (-2 14/29) ;

+5

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Ермолай · Answer 1

1) 3/7+4/9 = (27+28) / 63=55/63

2) 8/9-7/8 = (64-63) / 72=1/72

3) 13/15-2/3 = (13-10) / 15=3/15=1/5

4) 20/21+3/7 = (20+9) / 21=29/21

5) 17/18-11/12 = (34-33) / 36=1/36

6) 7/16+1/6 = (42+16) / 96=58/96=29/48

7) 2/9+5/6 = (4+15) / 18=19/18

8) 10/21+9/14 = (20+27) / 42=47/42

9) 7/9-4/15 = (70-24) / 90=46/90=23/45

10) 9/14-3/7+15/28 = (18-12+15) / 28=21/28