Add 72/96 and 42/20
1st number: 72/96, 2nd number: 2 2/20
72/96 + 42/20 is 57/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 20 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 96 × 5 = 480,
72/96 = 72 × 5/96 × 5 = 360/480 - Likewise, for the 2nd fraction, since 20 × 24 = 480,
42/20 = 42 × 24/20 × 24 = 1008/480 - Add the two like fractions:
360/480 + 1008/480 = 360 + 1008/480 = 1368/480 - 1368/480 simplified gives 57/20
- So, 72/96 + 42/20 = 57/20
In mixed form: 217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/96+84/20 72/96+42/40 72/96+42/60