Add 81/49 and 21/45
1st number: 1 32/49, 2nd number: 21/45
81/49 + 21/45 is 1558/735.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
81/49 = 81 × 45/49 × 45 = 3645/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
21/45 = 21 × 49/45 × 49 = 1029/2205 - Add the two like fractions:
3645/2205 + 1029/2205 = 3645 + 1029/2205 = 4674/2205 - 4674/2205 simplified gives 1558/735
- So, 81/49 + 21/45 = 1558/735
In mixed form: 288/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/49+42/45 81/98+21/45 81/49+21/90 81/49+63/45