Add 10/42 and 60/15
1st number: 10/42, 2nd number: 4 0/15
10/42 + 60/15 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
60/15 = 60 × 14/15 × 14 = 840/210 - Add the two like fractions:
50/210 + 840/210 = 50 + 840/210 = 890/210 - 890/210 simplified gives 89/21
- So, 10/42 + 60/15 = 89/21
In mixed form: 45/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+60/15 10/84+60/15 10/42+60/30 30/42+60/15 10/42+60/45 50/42+60/15 10/42+60/75 70/42+60/15