Add 21/75 and 20/7
1st number: 21/75, 2nd number: 2 6/7
21/75 + 20/7 is 549/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 7 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
21/75 = 21 × 7/75 × 7 = 147/525 - Likewise, for the 2nd fraction, since 7 × 75 = 525,
20/7 = 20 × 75/7 × 75 = 1500/525 - Add the two like fractions:
147/525 + 1500/525 = 147 + 1500/525 = 1647/525 - 1647/525 simplified gives 549/175
- So, 21/75 + 20/7 = 549/175
In mixed form: 324/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+20/7 21/75+40/7 21/75+20/14 63/75+20/7 21/75+60/7 21/75+20/21 21/75+20/35 21/75+20/49