Add 10/42 and 6/40
10/42 + 6/40 is 163/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
10/42 = 10 × 20/42 × 20 = 200/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
6/40 = 6 × 21/40 × 21 = 126/840 - Add the two like fractions:
200/840 + 126/840 = 200 + 126/840 = 326/840 - 326/840 simplified gives 163/420
- So, 10/42 + 6/40 = 163/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+6/40 10/42+12/40 10/84+6/40 10/42+6/80 30/42+6/40 10/42+18/40 50/42+6/40 10/42+30/40 70/42+6/40 10/42+42/40