Add 81/54 and 90/63
1st number: 1 27/54, 2nd number: 1 27/63
81/54 + 90/63 is 41/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
90/63 = 90 × 6/63 × 6 = 540/378 - Add the two like fractions:
567/378 + 540/378 = 567 + 540/378 = 1107/378 - 1107/378 simplified gives 41/14
- So, 81/54 + 90/63 = 41/14
In mixed form: 213/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: