Add 12/60 and 21/63
12/60 + 21/63 is 8/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 60 × 21 = 1260,
12/60 = 12 × 21/60 × 21 = 252/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
21/63 = 21 × 20/63 × 20 = 420/1260 - Add the two like fractions:
252/1260 + 420/1260 = 252 + 420/1260 = 672/1260 - 672/1260 simplified gives 8/15
- So, 12/60 + 21/63 = 8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/60+21/63 12/60+42/63 36/60+21/63 84/60+21/63