bainromanoff

Ответ:

1) 3.(54) - 2 1/3 = 351/99 - 7/3 = 351/99 - 231/99 = 120/99 = 1 7/33

3.(54) = 3 + 0.(54)

0.(54) = x

100x = 54.(54)

99x = 54

x = 54/99