Add 24/21 and 70/35
1st number: 1 3/21, 2nd number: 2 0/35
24/21 + 70/35 is 22/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
24/21 = 24 × 5/21 × 5 = 120/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
70/35 = 70 × 3/35 × 3 = 210/105 - Add the two like fractions:
120/105 + 210/105 = 120 + 210/105 = 330/105 - 330/105 simplified gives 22/7
- So, 24/21 + 70/35 = 22/7
In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+70/35 24/42+70/35 72/21+70/35 24/63+70/35