Add 21/25 and 10/42
21/25 + 10/42 is 566/525.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
21/25 = 21 × 42/25 × 42 = 882/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
10/42 = 10 × 25/42 × 25 = 250/1050 - Add the two like fractions:
882/1050 + 250/1050 = 882 + 250/1050 = 1132/1050 - 1132/1050 simplified gives 566/525
- So, 21/25 + 10/42 = 566/525
In mixed form: 141/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+10/42 21/25+20/42 21/50+10/42 21/25+10/84 63/25+10/42 21/25+30/42 21/75+10/42 21/25+50/42 21/25+70/42