Question

Evaluate \dfrac13m-1-\dfrac12n

3
1
​ m−1−
2
1
​ n when m=21m=21 and n=12n=12.

Answer 1

The value of given expression is 0, where m=21 and n=12.

Explanation:

The given expression is

`\frac13m-1-\frac12n`

substitute m=21 and n=12 in the above expression.

`\frac13m-1-\frac12n=\frac13(21)-1-\frac12(12)`

`\frac13m-1-\frac12n=7-1-6`

`\frac13m-1-\frac12n=7-7`

`\frac13m-1-\frac12n=0`

Therefore the value of given expression is 0, where m=21 and n=12.