Add 12/40 and 36/64
12/40 + 36/64 is 69/80.
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,
12/40 = 12 × 8/40 × 8 = 96/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
36/64 = 36 × 5/64 × 5 = 180/320 - Add the two like fractions:
96/320 + 180/320 = 96 + 180/320 = 276/320 - 276/320 simplified gives 69/80
- So, 12/40 + 36/64 = 69/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+36/64 12/40+72/64 12/80+36/64 36/40+36/64 60/40+36/64 84/40+36/64