Пошаговое объяснение:
1) 2/3 * 7/9 = (2*7)/(3*9) = 14/27
2) 1/4 * 2/6 = (1*2)/(4*6) = 2/24 = 1/12
3) 3/4 * 3/5 = (3*3)/(4*5) = 9/20
4) 7/8 * 9/10 = (7*9)/(8*10) = 63/80
5) 2/3 * 9/7 = (2*9)/(3*7) = 18/21 = 6/7
6) 2/11 * 9/7 = (2*9)/(11*7) = 18/77
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Пошаговое объяснение:
1) 2/3 * 7/9 = (2*7)/(3*9) = 14/27
2) 1/4 * 2/6 = (1*2)/(4*6) = 2/24 = 1/12
3) 3/4 * 3/5 = (3*3)/(4*5) = 9/20
4) 7/8 * 9/10 = (7*9)/(8*10) = 63/80
5) 2/3 * 9/7 = (2*9)/(3*7) = 18/21 = 6/7
6) 2/11 * 9/7 = (2*9)/(11*7) = 18/77