Add 72/15 and 40/8
1st number: 4 12/15, 2nd number: 5 0/8
72/15 + 40/8 is 49/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
72/15 = 72 × 8/15 × 8 = 576/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
40/8 = 40 × 15/8 × 15 = 600/120 - Add the two like fractions:
576/120 + 600/120 = 576 + 600/120 = 1176/120 - 1176/120 simplified gives 49/5
- So, 72/15 + 40/8 = 49/5
In mixed form: 94/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+80/8 72/30+40/8 72/15+40/16 72/45+40/8 72/15+40/24 72/75+40/8 72/15+40/56