Пошаговое объяснение:
4) 32,5 * 10 = 325
5) 4,5 * 0,1 = 0,45
6) 2 11/15 + 2 7/20 = 2 44/60 + 2 21/60 = 4 65/60 = 5 5/60 = 5 1/12
7) 4 1/7 - 2 1/4 = 4 4/28 - 2 7/28 = 3 32/28 - 2 7/28 = 1 25/28
8) 6 - 3 8/19 = 5 19/19 - 3 8/19 = 2 11/19
9) 1 1/27 : 7 7/9 = 28/27 : 70/9 = 28/27 * 9/70 = 2/3 * 1/5 = 2/15
10) 325,1 - 81,47 = 243,63
11) 5 3/8 = (5*8 + 3)/8 = (40+3)/8 = 43/8 = 43 : 8 = 5,375
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Пошаговое объяснение:
4) 32,5 * 10 = 325
5) 4,5 * 0,1 = 0,45
6) 2 11/15 + 2 7/20 = 2 44/60 + 2 21/60 = 4 65/60 = 5 5/60 = 5 1/12
7) 4 1/7 - 2 1/4 = 4 4/28 - 2 7/28 = 3 32/28 - 2 7/28 = 1 25/28
8) 6 - 3 8/19 = 5 19/19 - 3 8/19 = 2 11/19
9) 1 1/27 : 7 7/9 = 28/27 : 70/9 = 28/27 * 9/70 = 2/3 * 1/5 = 2/15
10) 325,1 - 81,47 = 243,63
11) 5 3/8 = (5*8 + 3)/8 = (40+3)/8 = 43/8 = 43 : 8 = 5,375