Add 24/4 and 70/21
1st number: 6 0/4, 2nd number: 3 7/21
24/4 + 70/21 is 28/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
24/4 = 24 × 21/4 × 21 = 504/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
70/21 = 70 × 4/21 × 4 = 280/84 - Add the two like fractions:
504/84 + 280/84 = 504 + 280/84 = 784/84 - 784/84 simplified gives 28/3
- So, 24/4 + 70/21 = 28/3
In mixed form: 91/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/4+70/21 24/8+70/21 24/4+70/42 72/4+70/21 24/12+70/21 24/4+70/63 24/20+70/21 24/28+70/21