Add 10/75 and 18/21
10/75 + 18/21 is 104/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
10/75 = 10 × 7/75 × 7 = 70/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
18/21 = 18 × 25/21 × 25 = 450/525 - Add the two like fractions:
70/525 + 450/525 = 70 + 450/525 = 520/525 - 520/525 simplified gives 104/105
- So, 10/75 + 18/21 = 104/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/75+18/21 10/75+36/21 10/75+18/42 30/75+18/21 10/75+54/21 10/75+18/63 50/75+18/21 10/75+90/21 70/75+18/21