Add 40/24 and 10/21
1st number: 1 16/24, 2nd number: 10/21
40/24 + 10/21 is 15/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
40/24 = 40 × 7/24 × 7 = 280/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
10/21 = 10 × 8/21 × 8 = 80/168 - Add the two like fractions:
280/168 + 80/168 = 280 + 80/168 = 360/168 - 360/168 simplified gives 15/7
- So, 40/24 + 10/21 = 15/7
In mixed form: 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24+10/21 40/24+20/21 40/48+10/21 40/24+10/42 40/24+30/21 40/72+10/21 40/24+10/63 40/24+50/21 40/24+70/21