Add 24/28 and 70/15
1st number: 24/28, 2nd number: 4 10/15
24/28 + 70/15 is 116/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
24/28 = 24 × 15/28 × 15 = 360/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
70/15 = 70 × 28/15 × 28 = 1960/420 - Add the two like fractions:
360/420 + 1960/420 = 360 + 1960/420 = 2320/420 - 2320/420 simplified gives 116/21
- So, 24/28 + 70/15 = 116/21
In mixed form: 511/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28+70/15 24/56+70/15 24/28+70/30 72/28+70/15 24/84+70/15 24/28+70/45 24/28+70/75