Add 42/63 and 72/45
1st number: 42/63, 2nd number: 1 27/45
42/63 + 72/45 is 34/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
72/45 = 72 × 7/45 × 7 = 504/315 - Add the two like fractions:
210/315 + 504/315 = 210 + 504/315 = 714/315 - 714/315 simplified gives 34/15
- So, 42/63 + 72/45 = 34/15
In mixed form: 24/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+72/45 42/63+72/90