Question

6. If the same number is added to the numerator and denominator of 9 , what 6 that number?​

Answer 1

Answer:

If the same number is added to both the numerator and denominator of the fraction 6/9 and get a result of 2, what number is added?

Let the number be n than we can make an easiy equation[1]:

6+n9+n=2∣×(9+n)

6+n=18+2n∣−n−18,⟺

n=−12

The number is −12

It checks out:

6+(−12)9+(−12)=−6−3=63=2

Just remember −a−b=ab

Since (−a)×1−b=a×1b [2]