Add 42/5 and 7/42
1st number: 8 2/5, 2nd number: 7/42
42/5 + 7/42 is 257/30.
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,
42/5 = 42 × 42/5 × 42 = 1764/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Add the two like fractions:
1764/210 + 35/210 = 1764 + 35/210 = 1799/210 - 1799/210 simplified gives 257/30
- So, 42/5 + 7/42 = 257/30
In mixed form: 817/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+7/42 42/5+14/42 42/10+7/42 42/5+7/84 42/5+21/42 42/15+7/42 42/5+35/42 42/25+7/42 42/5+49/42 42/35+7/42