Add 7/75 and 21/90
7/75 + 21/90 is 49/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
7/75 = 7 × 6/75 × 6 = 42/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
21/90 = 21 × 5/90 × 5 = 105/450 - Add the two like fractions:
42/450 + 105/450 = 42 + 105/450 = 147/450 - 147/450 simplified gives 49/150
- So, 7/75 + 21/90 = 49/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/75+21/90 7/75+42/90 21/75+21/90 7/75+63/90 35/75+21/90 49/75+21/90