Add 90/21 and 6/60
1st number: 4 6/21, 2nd number: 6/60
90/21 + 6/60 is 307/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
90/21 = 90 × 20/21 × 20 = 1800/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
6/60 = 6 × 7/60 × 7 = 42/420 - Add the two like fractions:
1800/420 + 42/420 = 1800 + 42/420 = 1842/420 - 1842/420 simplified gives 307/70
- So, 90/21 + 6/60 = 307/70
In mixed form: 427/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+12/60 90/42+6/60 90/21+18/60 90/63+6/60 90/21+30/60 90/21+42/60