Add 6/42 and 7/40
6/42 + 7/40 is 89/280.
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,
6/42 = 6 × 20/42 × 20 = 120/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
7/40 = 7 × 21/40 × 21 = 147/840 - Add the two like fractions:
120/840 + 147/840 = 120 + 147/840 = 267/840 - 267/840 simplified gives 89/280
- So, 6/42 + 7/40 = 89/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42+7/40 6/42+14/40 6/84+7/40 6/42+7/80 18/42+7/40 6/42+21/40 30/42+7/40 6/42+35/40 6/42+49/40