Add 72/16 and 18/15
1st number: 4 8/16, 2nd number: 1 3/15
72/16 + 18/15 is 57/10.
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,
18/15 = 18 × 16/15 × 16 = 288/240 - Add the two like fractions:
1080/240 + 288/240 = 1080 + 288/240 = 1368/240 - 1368/240 simplified gives 57/10
- So, 72/16 + 18/15 = 57/10
In mixed form: 57/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16+36/15 72/32+18/15 72/16+18/30 72/16+54/15 72/48+18/15 72/16+18/45 72/16+90/15 72/80+18/15 72/16+18/75