Add 21/10 and 18/60
1st number: 2 1/10, 2nd number: 18/60
21/10 + 18/60 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
21/10 = 21 × 6/10 × 6 = 126/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
18/60 = 18 × 1/60 × 1 = 18/60 - Add the two like fractions:
126/60 + 18/60 = 126 + 18/60 = 144/60 - 144/60 simplified gives 12/5
- So, 21/10 + 18/60 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+18/60 21/10+36/60 21/20+18/60 63/10+18/60 21/10+54/60 21/30+18/60 21/10+90/60 21/50+18/60 21/70+18/60