Question

encontre o valor da expressao:​

Answer 1

2^(-1) = 1/2

3^(-1) = 1/3

4^(-1) = 1/4

1/2 + 1/3 - 1/4 = 3/6 + 2/6 - 1/4

5/6 - 1/4 = 10/12 - 3/12 = 7/12