Add 10/45 and 20/63
10/45 + 20/63 is 34/63.
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,
10/45 = 10 × 7/45 × 7 = 70/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315 - Add the two like fractions:
70/315 + 100/315 = 70 + 100/315 = 170/315 - 170/315 simplified gives 34/63
- So, 10/45 + 20/63 = 34/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+20/63 10/45+40/63 10/90+20/63 30/45+20/63 10/45+60/63 50/45+20/63 70/45+20/63