Add 21/56 and 45/25
1st number: 21/56, 2nd number: 1 20/25
21/56 + 45/25 is 87/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 25 is 1400
Next, find the equivalent fraction of both fractional numbers with denominator 1400 - For the 1st fraction, since 56 × 25 = 1400,
21/56 = 21 × 25/56 × 25 = 525/1400 - Likewise, for the 2nd fraction, since 25 × 56 = 1400,
45/25 = 45 × 56/25 × 56 = 2520/1400 - Add the two like fractions:
525/1400 + 2520/1400 = 525 + 2520/1400 = 3045/1400 - 3045/1400 simplified gives 87/40
- So, 21/56 + 45/25 = 87/40
In mixed form: 27/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+45/25 21/56+90/25 21/56+45/50 63/56+45/25 21/56+45/75