Add 3/90 and 21/50
3/90 + 21/50 is 34/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
3/90 = 3 × 5/90 × 5 = 15/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450 - Add the two like fractions:
15/450 + 189/450 = 15 + 189/450 = 204/450 - 204/450 simplified gives 34/75
- So, 3/90 + 21/50 = 34/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+21/50 3/90+42/50 9/90+21/50 3/90+63/50 15/90+21/50 21/90+21/50