Answer:
A) -4
Explanation:
Question
Solution
Substitute the given values of m and n into the original expression:
Carry out the operation in the brackets first
Now carry out the operation in the numerator
Dividing by a fraction is the same as multiplying by the flipped version of the fraction (flipped = swap the numerator and denominator of the fraction we are dividing by):
To multiply a fraction, simply multiply the numerators and multiply the denominators:
Finally simplify: