Add 54/45 and 42/63
1st number: 1 9/45, 2nd number: 42/63
54/45 + 42/63 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
54/45 = 54 × 7/45 × 7 = 378/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Add the two like fractions:
378/315 + 210/315 = 378 + 210/315 = 588/315 - 588/315 simplified gives 28/15
- So, 54/45 + 42/63 = 28/15
In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45+84/63 54/90+42/63