Add 1/20 and 18/63
1/20 + 18/63 is 47/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
1/20 = 1 × 63/20 × 63 = 63/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
18/63 = 18 × 20/63 × 20 = 360/1260 - Add the two like fractions:
63/1260 + 360/1260 = 63 + 360/1260 = 423/1260 - 423/1260 simplified gives 47/140
- So, 1/20 + 18/63 = 47/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+18/63 1/20+36/63 1/40+18/63 3/20+18/63 1/20+54/63 1/60+18/63 5/20+18/63 1/20+90/63 7/20+18/63