Add 5/21 and 90/48
1st number: 5/21, 2nd number: 1 42/48
5/21 + 90/48 is 355/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
5/21 = 5 × 16/21 × 16 = 80/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Add the two like fractions:
80/336 + 630/336 = 80 + 630/336 = 710/336 - 710/336 simplified gives 355/168
- So, 5/21 + 90/48 = 355/168
In mixed form: 219/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+90/48 5/42+90/48 5/21+90/96 15/21+90/48 5/63+90/48 25/21+90/48 35/21+90/48