If the numerator and denominator of the fraction

Question

4
9 are both increased by a certain
value, m, the fraction then becomes equal to
3
4�. Calculate this value.

Answer 1

(4+x)/(9+x) = 3/4

16 + 4 x = 27 + 3 x

x = 11

check
(4+11)/(9+11)
15/20
3/4 yes