Add 21/49 and 21/45
21/49 + 21/45 is 94/105.
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,
21/49 = 21 × 45/49 × 45 = 945/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
21/45 = 21 × 49/45 × 49 = 1029/2205 - Add the two like fractions:
945/2205 + 1029/2205 = 945 + 1029/2205 = 1974/2205 - 1974/2205 simplified gives 94/105
- So, 21/49 + 21/45 = 94/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/49+21/45 21/49+42/45 21/98+21/45 21/49+21/90 63/49+21/45 21/49+63/45