Add 7/42 and 12/10
1st number: 7/42, 2nd number: 1 2/10
7/42 + 12/10 is 41/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
12/10 = 12 × 21/10 × 21 = 252/210 - Add the two like fractions:
35/210 + 252/210 = 35 + 252/210 = 287/210 - 287/210 simplified gives 41/30
- So, 7/42 + 12/10 = 41/30
In mixed form: 111/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+12/10 7/42+24/10 7/84+12/10 7/42+12/20 21/42+12/10 7/42+36/10 7/42+12/30 35/42+12/10 7/42+60/10 7/42+12/50 49/42+12/10 7/42+84/10 7/42+12/70