Add 4/25 and 54/21
1st number: 4/25, 2nd number: 2 12/21
4/25 + 54/21 is 478/175.
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,
4/25 = 4 × 21/25 × 21 = 84/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
54/21 = 54 × 25/21 × 25 = 1350/525 - Add the two like fractions:
84/525 + 1350/525 = 84 + 1350/525 = 1434/525 - 1434/525 simplified gives 478/175
- So, 4/25 + 54/21 = 478/175
In mixed form: 2128/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/25+54/21 4/50+54/21 4/25+54/42 12/25+54/21 4/75+54/21 4/25+54/63 20/25+54/21 28/25+54/21