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5 3/4 + 2 1/6=
4 5/9-2 1/27=
7 3/5 - 2 1/8=
8 3/8+2 1/5=
4 3/7 + 2 1/4=
Ответы
Ответ дал:
2
1) 5 3/4 + 2 1/6 = 5 9/12 + 2 2/12 = 7 11/12
2) 4 5/9 - 2 1/27 = 4 15/27 - 2 1/27 = 2 14/27
3) 7 3/5 - 2 1/8 = 7 24/40 - 2 5/40 = 5 19/40
4) 8 3/8 + 2 1/5 = 8 15/40 + 2 8/40 = 10 23/40
5) 4 3/7 + 2 1/4 = 4 12/28 + 2 7/28 = 6 19/28
2) 4 5/9 - 2 1/27 = 4 15/27 - 2 1/27 = 2 14/27
3) 7 3/5 - 2 1/8 = 7 24/40 - 2 5/40 = 5 19/40
4) 8 3/8 + 2 1/5 = 8 15/40 + 2 8/40 = 10 23/40
5) 4 3/7 + 2 1/4 = 4 12/28 + 2 7/28 = 6 19/28
Ответ дал:
1
5 3/4 + 2 1/6 = 23/4 + 13/6 = (23 × 3 + 13 × 2)/12 = 69/12 + 26/12 = 95/12 = 7 11/12
4 5/9 - 2 1/27 = 41/9 - 55/27 = (41 × 3 - 55 × 1)/27 = 123/27 - 55/27 = 68/27 = 2 14/27
7 3/5 - 2 1/8 = 38/5 - 17/8 =(38 × 8 - 17 × 5)/40 = 304/40 - 85/40 = 219/40 = 5 19/40
8 3/8 + 2 1/5 = 67/8 + 11/5 =(67 × 5 + 11 × 8)/40 = 335/40 + 88/40 = 423/40 = 10 23/40
4 3/7 + 2 1/4 = 31/7 + 9/4 =(31 × 4 + 9 × 7)/28 = 124/28 + 63/28 = 187/28 = 6 19/28
4 5/9 - 2 1/27 = 41/9 - 55/27 = (41 × 3 - 55 × 1)/27 = 123/27 - 55/27 = 68/27 = 2 14/27
7 3/5 - 2 1/8 = 38/5 - 17/8 =(38 × 8 - 17 × 5)/40 = 304/40 - 85/40 = 219/40 = 5 19/40
8 3/8 + 2 1/5 = 67/8 + 11/5 =(67 × 5 + 11 × 8)/40 = 335/40 + 88/40 = 423/40 = 10 23/40
4 3/7 + 2 1/4 = 31/7 + 9/4 =(31 × 4 + 9 × 7)/28 = 124/28 + 63/28 = 187/28 = 6 19/28
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