Add 9/42 and 6/40
9/42 + 6/40 is 51/140.
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,
9/42 = 9 × 20/42 × 20 = 180/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
6/40 = 6 × 21/40 × 21 = 126/840 - Add the two like fractions:
180/840 + 126/840 = 180 + 126/840 = 306/840 - 306/840 simplified gives 51/140
- So, 9/42 + 6/40 = 51/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+6/40 9/42+12/40 9/84+6/40 9/42+6/80 27/42+6/40 9/42+18/40 45/42+6/40 9/42+30/40 63/42+6/40 9/42+42/40