Add 21/40 and 8/27
21/40 + 8/27 is 887/1080.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
21/40 = 21 × 27/40 × 27 = 567/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
8/27 = 8 × 40/27 × 40 = 320/1080 - Add the two like fractions:
567/1080 + 320/1080 = 567 + 320/1080 = 887/1080 - So, 21/40 + 8/27 = 887/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+8/27 21/40+16/27 21/80+8/27 21/40+8/54 63/40+8/27 21/40+24/27 21/40+8/81 21/40+40/27 21/40+56/27