Add 72/16 and 54/15
1st number: 4 8/16, 2nd number: 3 9/15
72/16 + 54/15 is 81/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
72/16 = 72 × 15/16 × 15 = 1080/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
54/15 = 54 × 16/15 × 16 = 864/240 - Add the two like fractions:
1080/240 + 864/240 = 1080 + 864/240 = 1944/240 - 1944/240 simplified gives 81/10
- So, 72/16 + 54/15 = 81/10
In mixed form: 81/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/32+54/15 72/16+54/30 72/48+54/15 72/16+54/45 72/80+54/15 72/16+54/75