Add 42/25 and 21/84
1st number: 1 17/25, 2nd number: 21/84
42/25 + 21/84 is 193/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 25 × 84 = 2100,
42/25 = 42 × 84/25 × 84 = 3528/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Add the two like fractions:
3528/2100 + 525/2100 = 3528 + 525/2100 = 4053/2100 - 4053/2100 simplified gives 193/100
- So, 42/25 + 21/84 = 193/100
In mixed form: 193/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25+21/84 42/25+42/84 42/50+21/84 42/25+63/84 42/75+21/84