Add 21/10 and 54/48
1st number: 2 1/10, 2nd number: 1 6/48
21/10 + 54/48 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 10 × 24 = 240,
21/10 = 21 × 24/10 × 24 = 504/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
54/48 = 54 × 5/48 × 5 = 270/240 - Add the two like fractions:
504/240 + 270/240 = 504 + 270/240 = 774/240 - 774/240 simplified gives 129/40
- So, 21/10 + 54/48 = 129/40
In mixed form: 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+54/48 21/20+54/48 21/10+54/96 63/10+54/48 21/30+54/48 21/50+54/48 21/70+54/48