5/6 и 7/11 = 55/66 и 42/66
7/13 и 7/16 = 112/208 и 91/208
3/8 и 1/6 = 9/24 и 4/24
5/8 и 7/10 = 25/40 и 28/40
7/12 и 11/18 = 21/36 и 22/36
10/21 и 9/14 = 20/42 и 27/42
3/10 и 3/8 и 3/4 = 12/40 и 15/40 и 30/40
3/28 и 9/14 и 7/8 = 6/56 и 36/56 и 49/56
Ширина: (25-4*2)/4=4,25см
Длина:4,25+4=8,25см
1) 48:9=5(ост3)
2)52:8=6 (ост4)
3) 86 :10=8(ост 6)
2x+5+81=106
2x=86+106
2x=192
x=192: 2
x=96
omвеm: 96