Question

1    1   1    1

_ - _ + _ + _ = ???
6    3   4    6

Answer 1

Vamos la

1/6 - 1/3 + 1/4 + 1/6

mmc = 12

2/12 - 4/12 + 3/12 + 2/12 = 7/12 - 4/12 = 3/12 = 1/4