Add 72/8 and 42/5
1st number: 9 0/8, 2nd number: 8 2/5
72/8 + 42/5 is 87/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
42/5 = 42 × 8/5 × 8 = 336/40 - Add the two like fractions:
360/40 + 336/40 = 360 + 336/40 = 696/40 - 696/40 simplified gives 87/5
- So, 72/8 + 42/5 = 87/5
In mixed form: 172/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8+84/5 72/16+42/5 72/8+42/10 72/24+42/5 72/8+42/15 72/40+42/5 72/8+42/25 72/56+42/5 72/8+42/35