Add 2/42 and 3/80
2/42 + 3/80 is 143/1680.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
2/42 = 2 × 40/42 × 40 = 80/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
3/80 = 3 × 21/80 × 21 = 63/1680 - Add the two like fractions:
80/1680 + 63/1680 = 80 + 63/1680 = 143/1680 - So, 2/42 + 3/80 = 143/1680
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+3/80 2/42+6/80 2/84+3/80 6/42+3/80 2/42+9/80 10/42+3/80 2/42+15/80 14/42+3/80 2/42+21/80