Add 5/10 and 3/42
5/10 + 3/42 is 4/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
5/10 = 5 × 21/10 × 21 = 105/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Add the two like fractions:
105/210 + 15/210 = 105 + 15/210 = 120/210 - 120/210 simplified gives 4/7
- So, 5/10 + 3/42 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10+6/42 5/20+3/42 5/10+3/84 15/10+3/42 5/10+9/42 5/30+3/42 25/10+3/42 5/10+15/42 5/50+3/42 35/10+3/42 5/10+21/42 5/70+3/42