Add 18/6 and 21/7
1st number: 3 0/6, 2nd number: 3 0/7
18/6 + 21/7 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
18/6 = 18 × 7/6 × 7 = 126/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
21/7 = 21 × 6/7 × 6 = 126/42 - Add the two like fractions:
126/42 + 126/42 = 126 + 126/42 = 252/42 - 252/42 simplified gives 6/1
- So, 18/6 + 21/7 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/6+21/7 18/6+42/7 18/12+21/7 18/6+21/14 54/6+21/7 18/6+63/7 90/6+21/7 18/30+21/7 18/6+21/35 18/42+21/7 18/6+21/49