Add 3/42 and 40/10
1st number: 3/42, 2nd number: 4 0/10
3/42 + 40/10 is 57/14.
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,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
40/10 = 40 × 21/10 × 21 = 840/210 - Add the two like fractions:
15/210 + 840/210 = 15 + 840/210 = 855/210 - 855/210 simplified gives 57/14
- So, 3/42 + 40/10 = 57/14
In mixed form: 41/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+40/10 3/42+80/10 3/84+40/10 3/42+40/20 9/42+40/10 3/42+40/30 15/42+40/10 3/42+40/50 21/42+40/10 3/42+40/70