Add 21/75 and 12/7
1st number: 21/75, 2nd number: 1 5/7
21/75 + 12/7 is 349/175.
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,
12/7 = 12 × 75/7 × 75 = 900/525 - Add the two like fractions:
147/525 + 900/525 = 147 + 900/525 = 1047/525 - 1047/525 simplified gives 349/175
- So, 21/75 + 12/7 = 349/175
In mixed form: 1174/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75+12/7 21/75+24/7 21/75+12/14 63/75+12/7 21/75+36/7 21/75+12/21 21/75+60/7 21/75+12/35 21/75+84/7 21/75+12/49