Add 21/75 and 84/7
1st number: 21/75, 2nd number: 12 0/7
21/75 + 84/7 is 307/25.
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,
84/7 = 84 × 75/7 × 75 = 6300/525 - Add the two like fractions:
147/525 + 6300/525 = 147 + 6300/525 = 6447/525 - 6447/525 simplified gives 307/25
- So, 21/75 + 84/7 = 307/25
In mixed form: 127/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+84/7 21/75+84/14 63/75+84/7 21/75+84/21 21/75+84/35 21/75+84/49