a:2,4=12,4:6,2
a/2.4 = 12.4/6.2
a = 2.4 * 12.4 / 6.2
a = 4.8
Ответ: а = 4.8
1/6:b=2:3 3/7
(1/6) / b = 2 / (3 + 3/7)(1/6) / b = 2 / (3 + 24/7)(1/6) / b = 2 / (45/7)(1/6) / b = 14/451 / (6b) = 14/45
6b = 45 / 14
b = 45 / 14 * 6b = 27/7
Ответ: b = 27/7
a:2,4=12,4:6,2
a/2.4 = 12.4/6.2
a = 2.4 * 12.4 / 6.2
a = 4.8
Ответ: а = 4.8
1/6:b=2:3 3/7
(1/6) / b = 2 / (3 + 3/7)
(1/6) / b = 2 / (3 + 24/7)
(1/6) / b = 2 / (45/7)
(1/6) / b = 14/45
1 / (6b) = 14/45
6b = 45 / 14
b = 45 / 14 * 6
b = 27/7
Ответ: b = 27/7