Add 15/48 and 81/45, Solve 15/48 + 1 36/45 as a fraction

Add 15/48 and 81/45

1^st number: 15/48, 2^nd number: 1 36/45

15/48 + 81/45 is 169/80.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 48 × 15 = 720,
15/48 = 15 × 15/48 × 15 = 225/720
Likewise, for the 2nd fraction, since 45 × 16 = 720,
81/45 = 81 × 16/45 × 16 = 1296/720
Add the two like fractions:
225/720 + 1296/720 = 225 + 1296/720 = 1521/720
1521/720 simplified gives 169/80
So, 15/48 + 81/45 = 169/80
In mixed form: 29/80

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad