Add 4/42 and 40/10
1st number: 4/42, 2nd number: 4 0/10
4/42 + 40/10 is 86/21.
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,
4/42 = 4 × 5/42 × 5 = 20/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
40/10 = 40 × 21/10 × 21 = 840/210 - Add the two like fractions:
20/210 + 840/210 = 20 + 840/210 = 860/210 - 860/210 simplified gives 86/21
- So, 4/42 + 40/10 = 86/21
In mixed form: 42/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+40/10 4/42+80/10 4/84+40/10 4/42+40/20 12/42+40/10 4/42+40/30 20/42+40/10 4/42+40/50 28/42+40/10 4/42+40/70