Add 42/21 and 4/25
1st number: 2 0/21, 2nd number: 4/25
42/21 + 4/25 is 54/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
42/21 = 42 × 25/21 × 25 = 1050/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
4/25 = 4 × 21/25 × 21 = 84/525 - Add the two like fractions:
1050/525 + 84/525 = 1050 + 84/525 = 1134/525 - 1134/525 simplified gives 54/25
- So, 42/21 + 4/25 = 54/25
In mixed form: 24/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+4/25 42/21+8/25 42/21+4/50 42/21+12/25 42/63+4/25 42/21+4/75 42/21+20/25 42/21+28/25