Add 15/64 and 15/90
15/64 + 15/90 is 77/192.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 90 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
15/64 = 15 × 45/64 × 45 = 675/2880 - Likewise, for the 2nd fraction, since 90 × 32 = 2880,
15/90 = 15 × 32/90 × 32 = 480/2880 - Add the two like fractions:
675/2880 + 480/2880 = 675 + 480/2880 = 1155/2880 - 1155/2880 simplified gives 77/192
- So, 15/64 + 15/90 = 77/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/64+15/90 15/64+30/90 45/64+15/90 15/64+45/90 75/64+15/90 15/64+75/90