Add 21/75 and 72/9
1st number: 21/75, 2nd number: 8 0/9
21/75 + 72/9 is 207/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
21/75 = 21 × 3/75 × 3 = 63/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
72/9 = 72 × 25/9 × 25 = 1800/225 - Add the two like fractions:
63/225 + 1800/225 = 63 + 1800/225 = 1863/225 - 1863/225 simplified gives 207/25
- So, 21/75 + 72/9 = 207/25
In mixed form: 87/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+72/9 21/75+72/18 63/75+72/9 21/75+72/27 21/75+72/45 21/75+72/63