Add 20/40 and 15/64
20/40 + 15/64 is 47/64.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 40 × 8 = 320,
20/40 = 20 × 8/40 × 8 = 160/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
15/64 = 15 × 5/64 × 5 = 75/320 - Add the two like fractions:
160/320 + 75/320 = 160 + 75/320 = 235/320 - 235/320 simplified gives 47/64
- So, 20/40 + 15/64 = 47/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+30/64 20/80+15/64 60/40+15/64 20/40+45/64 20/40+75/64