Add 21/54 and 49/8
1st number: 21/54, 2nd number: 6 1/8
21/54 + 49/8 is 469/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 8 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
49/8 = 49 × 27/8 × 27 = 1323/216 - Add the two like fractions:
84/216 + 1323/216 = 84 + 1323/216 = 1407/216 - 1407/216 simplified gives 469/72
- So, 21/54 + 49/8 = 469/72
In mixed form: 637/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54+49/8 21/54+98/8 21/54+49/16 63/54+49/8 21/54+49/24 21/54+49/40 21/54+49/56