Add 70/75 and 98/21
1st number: 70/75, 2nd number: 4 14/21
70/75 + 98/21 is 28/5.
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,
70/75 = 70 × 7/75 × 7 = 490/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
98/21 = 98 × 25/21 × 25 = 2450/525 - Add the two like fractions:
490/525 + 2450/525 = 490 + 2450/525 = 2940/525 - 2940/525 simplified gives 28/5
- So, 70/75 + 98/21 = 28/5
In mixed form: 53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/75+98/42 70/75+98/63