Add 1/5 and 7/42
1/5 + 7/42 is 11/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
1/5 = 1 × 42/5 × 42 = 42/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Add the two like fractions:
42/210 + 35/210 = 42 + 35/210 = 77/210 - 77/210 simplified gives 11/30
- So, 1/5 + 7/42 = 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5+7/42 1/5+14/42 1/10+7/42 1/5+7/84 3/5+7/42 1/5+21/42 1/15+7/42 1/5+35/42 1/25+7/42 7/5+7/42 1/5+49/42 1/35+7/42