Add 21/60 and 2/42
21/60 + 2/42 is 167/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
2/42 = 2 × 10/42 × 10 = 20/420 - Add the two like fractions:
147/420 + 20/420 = 147 + 20/420 = 167/420 - So, 21/60 + 2/42 = 167/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+2/42 21/60+4/42 21/60+2/84 63/60+2/42 21/60+6/42 21/60+10/42 21/60+14/42