Add 24/20 and 70/42
1st number: 1 4/20, 2nd number: 1 28/42
24/20 + 70/42 is 43/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
24/20 = 24 × 21/20 × 21 = 504/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
70/42 = 70 × 10/42 × 10 = 700/420 - Add the two like fractions:
504/420 + 700/420 = 504 + 700/420 = 1204/420 - 1204/420 simplified gives 43/15
- So, 24/20 + 70/42 = 43/15
In mixed form: 213/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/20+70/42 24/40+70/42 24/20+70/84 72/20+70/42 24/60+70/42