Add 21/15 and 54/14
1st number: 1 6/15, 2nd number: 3 12/14
21/15 + 54/14 is 184/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
21/15 = 21 × 14/15 × 14 = 294/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
54/14 = 54 × 15/14 × 15 = 810/210 - Add the two like fractions:
294/210 + 810/210 = 294 + 810/210 = 1104/210 - 1104/210 simplified gives 184/35
- So, 21/15 + 54/14 = 184/35
In mixed form: 59/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15+54/14 21/30+54/14 21/15+54/28 63/15+54/14 21/45+54/14 21/15+54/42 21/75+54/14 21/15+54/70 21/15+54/98