Add 42/15 and 24/84
1st number: 2 12/15, 2nd number: 24/84
42/15 + 24/84 is 108/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
42/15 = 42 × 28/15 × 28 = 1176/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
24/84 = 24 × 5/84 × 5 = 120/420 - Add the two like fractions:
1176/420 + 120/420 = 1176 + 120/420 = 1296/420 - 1296/420 simplified gives 108/35
- So, 42/15 + 24/84 = 108/35
In mixed form: 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+24/84 42/15+48/84 42/30+24/84 42/15+72/84 42/45+24/84 42/75+24/84