Add 15/8 and 75/40
1st number: 1 7/8, 2nd number: 1 35/40
15/8 + 75/40 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
15/8 = 15 × 5/8 × 5 = 75/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
75/40 = 75 × 1/40 × 1 = 75/40 - Add the two like fractions:
75/40 + 75/40 = 75 + 75/40 = 150/40 - 150/40 simplified gives 15/4
- So, 15/8 + 75/40 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8+75/40 15/16+75/40 15/8+75/80 45/8+75/40 15/24+75/40 75/8+75/40 15/40+75/40 15/56+75/40