Add 8/45 and 42/63
8/45 + 42/63 is 38/45.
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,
8/45 = 8 × 7/45 × 7 = 56/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Add the two like fractions:
56/315 + 210/315 = 56 + 210/315 = 266/315 - 266/315 simplified gives 38/45
- So, 8/45 + 42/63 = 38/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45+42/63 8/45+84/63 8/90+42/63 24/45+42/63 40/45+42/63 56/45+42/63