Add 30/63 and 15/20
30/63 + 15/20 is 103/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
30/63 = 30 × 20/63 × 20 = 600/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
15/20 = 15 × 63/20 × 63 = 945/1260 - Add the two like fractions:
600/1260 + 945/1260 = 600 + 945/1260 = 1545/1260 - 1545/1260 simplified gives 103/84
- So, 30/63 + 15/20 = 103/84
In mixed form: 119/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63+15/20 30/63+30/20 30/63+15/40 90/63+15/20 30/63+45/20 30/63+15/60 30/63+75/20