Add 21/6 and 6/72
1st number: 3 3/6, 2nd number: 6/72
216 + 672 is 4312.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
216 = 21 × 126 × 12 = 25272 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
672 = 6 × 172 × 1 = 672 - Add the two like fractions:
25272 + 672 = 252 + 672 = 25872 - 258/72 simplified gives 4312
- So, 21/6 + 6/72 = 43/12
In mixed form: 3712
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+6/72 21/6+12/72 21/12+6/72 63/6+6/72 21/6+18/72 21/18+6/72 21/6+30/72 21/30+6/72 21/6+42/72 21/42+6/72