Question

Find 1112 (−712) write your answer as a fraction in simplest form.

Answer 1

1112(-712) = 1112-712 = 400

It is simple number, we can't write it in fraction form.

Answer 2

`(1)/(3)`

Explanation:

Given:
`(11)/(12)+(-(7)/(12))`

The given expression is sum of two rational number. One positive and one negative rational number.

Using sign law of multiplication:

+ (-) = -

`\Rightarrow (11)/(12)+(-(7)/(12))`

`\Rightarrow (11)/(12)-(7)/(12)`

Both fraction has same denominator. Write as common denominator 12

`\Rightarrow (11-7)/(12)`

`\Rightarrow (4)/(12)`

Now simplify the fraction if possible. Simplify if numerator and denominator has common factor.

`\Rightarrow (4/4)/(12/4)`

`\Rightarrow (1)/(3)`

Hence, The solution in simplest fraction
`(1)/(3)`