Add 15/20 and 30/64
15/20 + 30/64 is 39/32.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 20 × 16 = 320,
15/20 = 15 × 16/20 × 16 = 240/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
30/64 = 30 × 5/64 × 5 = 150/320 - Add the two like fractions:
240/320 + 150/320 = 240 + 150/320 = 390/320 - 390/320 simplified gives 39/32
- So, 15/20 + 30/64 = 39/32
In mixed form: 17/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20+30/64 15/20+60/64 15/40+30/64 45/20+30/64 15/20+90/64 15/60+30/64 75/20+30/64