Add 72/54 and 7/15
1st number: 1 18/54, 2nd number: 7/15
72/54 + 7/15 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 15 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
72/54 = 72 × 5/54 × 5 = 360/270 - Likewise, for the 2nd fraction, since 15 × 18 = 270,
7/15 = 7 × 18/15 × 18 = 126/270 - Add the two like fractions:
360/270 + 126/270 = 360 + 126/270 = 486/270 - 486/270 simplified gives 9/5
- So, 72/54 + 7/15 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/54+14/15 72/54+7/30 72/54+21/15 72/54+7/45 72/54+35/15 72/54+7/75 72/54+49/15