1/7 х + 3/14 х = 14
2/14 x + 3/14 x = 14
5/14 x = 14
x = 14 : (5/14)
x = 14 * 14/5
x = 196/5
x = 39 1/5
Ответ: 39 1/5
1/7 х + 3/14 х = 14
2/14 x + 3/14 x = 14
5/14 x = 14
x = 14 : (5/14)
x = 14 * 14/5
x = 196/5
x = 39 1/5
Ответ: 39 1/5