Add 40/28 and 24/30
1st number: 1 12/28, 2nd number: 24/30
40/28 + 24/30 is 78/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
40/28 = 40 × 15/28 × 15 = 600/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
24/30 = 24 × 14/30 × 14 = 336/420 - Add the two like fractions:
600/420 + 336/420 = 600 + 336/420 = 936/420 - 936/420 simplified gives 78/35
- So, 40/28 + 24/30 = 78/35
In mixed form: 28/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+24/30 40/28+48/30 40/56+24/30 40/28+24/60 40/28+72/30 40/84+24/30 40/28+24/90