Add 42/25 and 1/21
1st number: 1 17/25, 2nd number: 1/21
42/25 + 1/21 is 907/525.
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,
42/25 = 42 × 21/25 × 21 = 882/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
1/21 = 1 × 25/21 × 25 = 25/525 - Add the two like fractions:
882/525 + 25/525 = 882 + 25/525 = 907/525 - So, 42/25 + 1/21 = 907/525
In mixed form: 1382/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25+1/21 42/25+2/21 42/50+1/21 42/25+1/42 42/25+3/21 42/75+1/21 42/25+1/63 42/25+5/21 42/25+7/21