Add 45/15 and 21/14
1st number: 3 0/15, 2nd number: 1 7/14
45/15 + 21/14 is 9/2.
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,
45/15 = 45 × 14/15 × 14 = 630/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
21/14 = 21 × 15/14 × 15 = 315/210 - Add the two like fractions:
630/210 + 315/210 = 630 + 315/210 = 945/210 - 945/210 simplified gives 9/2
- So, 45/15 + 21/14 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+21/14 45/15+42/14 45/30+21/14 45/15+21/28 45/15+63/14 45/15+21/42 45/75+21/14 45/15+21/70 45/15+21/98