Add 45/21 and 63/75
1st number: 2 3/21, 2nd number: 63/75
45/21 + 63/75 is 522/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
45/21 = 45 × 25/21 × 25 = 1125/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
63/75 = 63 × 7/75 × 7 = 441/525 - Add the two like fractions:
1125/525 + 441/525 = 1125 + 441/525 = 1566/525 - 1566/525 simplified gives 522/175
- So, 45/21 + 63/75 = 522/175
In mixed form: 2172/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+63/75 45/42+63/75 45/63+63/75