Add 72/96 and 42/80
72/96 + 42/80 is 51/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 80 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 80 × 6 = 480,
42/80 = 42 × 6/80 × 6 = 252/480 - Add the two like fractions:
360/480 + 252/480 = 360 + 252/480 = 612/480 - 612/480 simplified gives 51/40
- So, 72/96 + 42/80 = 51/40
In mixed form: 111/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/96+84/80