Add 9/25 and 84/21
1st number: 9/25, 2nd number: 4 0/21
9/25 + 84/21 is 109/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
9/25 = 9 × 21/25 × 21 = 189/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
84/21 = 84 × 25/21 × 25 = 2100/525 - Add the two like fractions:
189/525 + 2100/525 = 189 + 2100/525 = 2289/525 - 2289/525 simplified gives 109/25
- So, 9/25 + 84/21 = 109/25
In mixed form: 49/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/25+84/21 9/50+84/21 9/25+84/42 27/25+84/21 9/75+84/21 9/25+84/63 45/25+84/21 63/25+84/21