Add 40/8 and 72/10
1st number: 5 0/8, 2nd number: 7 2/10
40/8 + 72/10 is 61/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
40/8 = 40 × 5/8 × 5 = 200/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
72/10 = 72 × 4/10 × 4 = 288/40 - Add the two like fractions:
200/40 + 288/40 = 200 + 288/40 = 488/40 - 488/40 simplified gives 61/5
- So, 40/8 + 72/10 = 61/5
In mixed form: 121/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+72/10 40/16+72/10 40/8+72/20 40/24+72/10 40/8+72/30 40/8+72/50 40/56+72/10 40/8+72/70