Add 81/60 and 18/48
1st number: 1 21/60, 2nd number: 18/48
81/60 + 18/48 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
81/60 = 81 × 4/60 × 4 = 324/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
18/48 = 18 × 5/48 × 5 = 90/240 - Add the two like fractions:
324/240 + 90/240 = 324 + 90/240 = 414/240 - 414/240 simplified gives 69/40
- So, 81/60 + 18/48 = 69/40
In mixed form: 129/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60+36/48 81/60+18/96 81/60+54/48 81/60+90/48