Add 27/63 and 20/30
27/63 + 20/30 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
27/63 = 27 × 10/63 × 10 = 270/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
20/30 = 20 × 21/30 × 21 = 420/630 - Add the two like fractions:
270/630 + 420/630 = 270 + 420/630 = 690/630 - 690/630 simplified gives 23/21
- So, 27/63 + 20/30 = 23/21
In mixed form: 12/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63+20/30 27/63+40/30 27/63+20/60 81/63+20/30 27/63+60/30 27/63+20/90