Add 63/42 and 4/15
1st number: 1 21/42, 2nd number: 4/15
63/42 + 4/15 is 53/30.
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,
63/42 = 63 × 5/42 × 5 = 315/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210 - Add the two like fractions:
315/210 + 56/210 = 315 + 56/210 = 371/210 - 371/210 simplified gives 53/30
- So, 63/42 + 4/15 = 53/30
In mixed form: 123/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42+8/15 63/84+4/15 63/42+4/30 63/42+12/15 63/42+4/45 63/42+20/15 63/42+4/75 63/42+28/15