Add 7/25 and 84/21
1st number: 7/25, 2nd number: 4 0/21
7/25 + 84/21 is 107/25.
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,
7/25 = 7 × 21/25 × 21 = 147/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
84/21 = 84 × 25/21 × 25 = 2100/525 - Add the two like fractions:
147/525 + 2100/525 = 147 + 2100/525 = 2247/525 - 2247/525 simplified gives 107/25
- So, 7/25 + 84/21 = 107/25
In mixed form: 47/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/25+84/21 7/50+84/21 7/25+84/42 21/25+84/21 7/75+84/21 7/25+84/63 35/25+84/21 49/25+84/21