Add 9/90 and 21/49
9/90 + 21/49 is 37/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
9/90 = 9 × 49/90 × 49 = 441/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
21/49 = 21 × 90/49 × 90 = 1890/4410 - Add the two like fractions:
441/4410 + 1890/4410 = 441 + 1890/4410 = 2331/4410 - 2331/4410 simplified gives 37/70
- So, 9/90 + 21/49 = 37/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90+21/49 9/90+42/49 9/90+21/98 27/90+21/49 9/90+63/49 45/90+21/49 63/90+21/49