Question

find the opposite of 1/3 and of -7/12

Answer 1

Opposite number is the same number with the opposite sign:

So the opposite of $\frac{1}{3}$ is $-\frac{1}{3}$, since the original number is positive

opposite of $- \frac{7}{12}$ is $\frac{7}{12}$, since the original number is negative

Answer 2

the opposite of 1/3 is -1/3.
the opposite of -7/12 is 7/12