Add 42/25 and 15/80
1st number: 1 17/25, 2nd number: 15/80
42/25 + 15/80 is 747/400.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
42/25 = 42 × 16/25 × 16 = 672/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
15/80 = 15 × 5/80 × 5 = 75/400 - Add the two like fractions:
672/400 + 75/400 = 672 + 75/400 = 747/400 - So, 42/25 + 15/80 = 747/400
In mixed form: 1347/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25+15/80 42/25+30/80 42/50+15/80 42/25+45/80 42/75+15/80 42/25+75/80