Add 20/64 and 90/45
1st number: 20/64, 2nd number: 2 0/45
20/64 + 90/45 is 37/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 45 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
20/64 = 20 × 45/64 × 45 = 900/2880 - Likewise, for the 2nd fraction, since 45 × 64 = 2880,
90/45 = 90 × 64/45 × 64 = 5760/2880 - Add the two like fractions:
900/2880 + 5760/2880 = 900 + 5760/2880 = 6660/2880 - 6660/2880 simplified gives 37/16
- So, 20/64 + 90/45 = 37/16
In mixed form: 25/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/64+90/45 60/64+90/45