Add 20/63 and 12/45
20/63 + 12/45 is 184/315.
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,
20/63 = 20 × 5/63 × 5 = 100/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Add the two like fractions:
100/315 + 84/315 = 100 + 84/315 = 184/315 - So, 20/63 + 12/45 = 184/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63+12/45 20/63+24/45 20/63+12/90 60/63+12/45 20/63+36/45 20/63+60/45 20/63+84/45