ПРИВИДИТЕ К НАИМЕНЬШОМУ ОБЩЕМУ ЗНАМЕНАТЕЛЮ ДРОБИ: А) 5/8 и 4/5 Б) 4/21 и 2/7 В) 9/22 и 14/55 Г) 5/6 и 8/9 Д) 11/20 и 9/16
а)
5/8 и 4/5 =
=(5*5)/40 и (4*8)/40=
=25/40 и 32/40
б)
4/21 и 2/7 =
=4/21 и (2*3)/21 =
= 4/21 и 6/21
в)
9/22 и 14/55 =
=(9*5)/110 и (14*2)/110 =
=45/110 и 28/110
г)
5/6 и 8/9 =
=(5*3)/18 и (8*2)/18 =
= 15/18 и 16/18
д)
11/20 и 9/16 =
=(11*4)/80 и (9*5)/80 =
= 44/80 и 45/80