Add 72/80 and 45/48
72/80 + 45/48 is 147/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
45/48 = 45 × 5/48 × 5 = 225/240 - Add the two like fractions:
216/240 + 225/240 = 216 + 225/240 = 441/240 - 441/240 simplified gives 147/80
- So, 72/80 + 45/48 = 147/80
In mixed form: 167/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+90/48 72/80+45/96