Add 18/63 and 20/5
1st number: 18/63, 2nd number: 4 0/5
18/63 + 20/5 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 5 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
18/63 = 18 × 5/63 × 5 = 90/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
20/5 = 20 × 63/5 × 63 = 1260/315 - Add the two like fractions:
90/315 + 1260/315 = 90 + 1260/315 = 1350/315 - 1350/315 simplified gives 30/7
- So, 18/63 + 20/5 = 30/7
In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63+20/5 18/63+40/5 18/63+20/10 54/63+20/5 18/63+60/5 18/63+20/15 90/63+20/5 18/63+20/25 18/63+20/35