Add 72/15 and 45/16
1st number: 4 12/15, 2nd number: 2 13/16
72/15 + 45/16 is 609/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
72/15 = 72 × 16/15 × 16 = 1152/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
45/16 = 45 × 15/16 × 15 = 675/240 - Add the two like fractions:
1152/240 + 675/240 = 1152 + 675/240 = 1827/240 - 1827/240 simplified gives 609/80
- So, 72/15 + 45/16 = 609/80
In mixed form: 749/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+90/16 72/30+45/16 72/15+45/32 72/45+45/16 72/15+45/48 72/75+45/16 72/15+45/80