Add 8/40 and 54/15
1st number: 8/40, 2nd number: 3 9/15
8/40 + 54/15 is 19/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
54/15 = 54 × 8/15 × 8 = 432/120 - Add the two like fractions:
24/120 + 432/120 = 24 + 432/120 = 456/120 - 456/120 simplified gives 19/5
- So, 8/40 + 54/15 = 19/5
In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+54/15 8/80+54/15 8/40+54/30 24/40+54/15 8/40+54/45 8/40+54/75 56/40+54/15