Add 18/63 and 20/40
18/63 + 20/40 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
18/63 = 18 × 40/63 × 40 = 720/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
20/40 = 20 × 63/40 × 63 = 1260/2520 - Add the two like fractions:
720/2520 + 1260/2520 = 720 + 1260/2520 = 1980/2520 - 1980/2520 simplified gives 11/14
- So, 18/63 + 20/40 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63+20/40 18/63+20/80 54/63+20/40 18/63+60/40 90/63+20/40