Add 90/18 and 45/64
1st number: 5 0/18, 2nd number: 45/64
90/18 + 45/64 is 365/64.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 18 × 32 = 576,
90/18 = 90 × 32/18 × 32 = 2880/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
45/64 = 45 × 9/64 × 9 = 405/576 - Add the two like fractions:
2880/576 + 405/576 = 2880 + 405/576 = 3285/576 - 3285/576 simplified gives 365/64
- So, 90/18 + 45/64 = 365/64
In mixed form: 545/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+90/64 90/36+45/64 90/54+45/64