Question

What is the numeratorfor the following rational expretion? 3/k+4/k=?/k

Answer 1

7/k should be the answer since when adding and subtracting as long as the denominators are common (which they are) only the numerator is changed

Answer 2

Because they all have the same denominator, all you have to do is add the numerator! So, 3/k + 4/k would equal 7/k