Add 15/75 and 16/21
15/75 + 16/21 is 101/105.
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,
15/75 = 15 × 7/75 × 7 = 105/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
16/21 = 16 × 25/21 × 25 = 400/525 - Add the two like fractions:
105/525 + 400/525 = 105 + 400/525 = 505/525 - 505/525 simplified gives 101/105
- So, 15/75 + 16/21 = 101/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+16/21 15/75+32/21 15/75+16/42 45/75+16/21 15/75+48/21 15/75+16/63 15/75+80/21