Add 42/15 and 45/24
1st number: 2 12/15, 2nd number: 1 21/24
42/15 + 45/24 is 187/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
42/15 = 42 × 8/15 × 8 = 336/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120 - Add the two like fractions:
336/120 + 225/120 = 336 + 225/120 = 561/120 - 561/120 simplified gives 187/40
- So, 42/15 + 45/24 = 187/40
In mixed form: 427/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+45/24 42/15+90/24 42/30+45/24 42/15+45/48 42/45+45/24 42/15+45/72 42/75+45/24