Add 20/6 and 18/42
1st number: 3 2/6, 2nd number: 18/42
20/6 + 18/42 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
20/6 = 20 × 7/6 × 7 = 140/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Add the two like fractions:
140/42 + 18/42 = 140 + 18/42 = 158/42 - 158/42 simplified gives 79/21
- So, 20/6 + 18/42 = 79/21
In mixed form: 316/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6+18/42 20/6+36/42 20/12+18/42 20/6+18/84 60/6+18/42 20/6+54/42 20/18+18/42 20/6+90/42 20/30+18/42 20/42+18/42