Add 4/42 and 40/60
4/42 + 40/60 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
4/42 = 4 × 10/42 × 10 = 40/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Add the two like fractions:
40/420 + 280/420 = 40 + 280/420 = 320/420 - 320/420 simplified gives 16/21
- So, 4/42 + 40/60 = 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+40/60 4/42+80/60 4/84+40/60 12/42+40/60 20/42+40/60 28/42+40/60