Add 5/8 and 30/40
5/8 + 30/40 is 11/8.
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,
5/8 = 5 × 5/8 × 5 = 25/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Add the two like fractions:
25/40 + 30/40 = 25 + 30/40 = 55/40 - 55/40 simplified gives 11/8
- So, 5/8 + 30/40 = 11/8
In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8+30/40 5/8+60/40 5/16+30/40 5/8+30/80 15/8+30/40 5/8+90/40 5/24+30/40 25/8+30/40 5/40+30/40 35/8+30/40 5/56+30/40