Add 18/42 and 98/80
1st number: 18/42, 2nd number: 1 18/80
18/42 + 98/80 is 463/280.
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,
18/42 = 18 × 40/42 × 40 = 720/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
98/80 = 98 × 21/80 × 21 = 2058/1680 - Add the two like fractions:
720/1680 + 2058/1680 = 720 + 2058/1680 = 2778/1680 - 2778/1680 simplified gives 463/280
- So, 18/42 + 98/80 = 463/280
In mixed form: 1183/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+98/80 18/84+98/80 54/42+98/80 90/42+98/80