Add 8/40 and 9/15
8/40 + 9/15 is 4/5.
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,
9/15 = 9 × 8/15 × 8 = 72/120 - Add the two like fractions:
24/120 + 72/120 = 24 + 72/120 = 96/120 - 96/120 simplified gives 4/5
- So, 8/40 + 9/15 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+9/15 8/40+18/15 8/80+9/15 8/40+9/30 24/40+9/15 8/40+27/15 8/40+9/45 8/40+45/15 8/40+9/75 56/40+9/15 8/40+63/15