Add 54/18 and 90/63
1st number: 3 0/18, 2nd number: 1 27/63
54/18 + 90/63 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
54/18 = 54 × 7/18 × 7 = 378/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
90/63 = 90 × 2/63 × 2 = 180/126 - Add the two like fractions:
378/126 + 180/126 = 378 + 180/126 = 558/126 - 558/126 simplified gives 31/7
- So, 54/18 + 90/63 = 31/7
In mixed form: 43/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/36+90/63 54/90+90/63