Add 70/24 and 54/21
1st number: 2 22/24, 2nd number: 2 12/21
70/24 + 54/21 is 461/84.
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,
70/24 = 70 × 7/24 × 7 = 490/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
54/21 = 54 × 8/21 × 8 = 432/168 - Add the two like fractions:
490/168 + 432/168 = 490 + 432/168 = 922/168 - 922/168 simplified gives 461/84
- So, 70/24 + 54/21 = 461/84
In mixed form: 541/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/48+54/21 70/24+54/42 70/72+54/21 70/24+54/63