Add 42/20 and 24/72
1st number: 2 2/20, 2nd number: 24/72
42/20 + 24/72 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
42/20 = 42 × 18/20 × 18 = 756/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
24/72 = 24 × 5/72 × 5 = 120/360 - Add the two like fractions:
756/360 + 120/360 = 756 + 120/360 = 876/360 - 876/360 simplified gives 73/30
- So, 42/20 + 24/72 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+24/72 42/20+48/72 42/40+24/72 42/60+24/72