Add 40/42 and 98/40
1st number: 40/42, 2nd number: 2 18/40
40/42 + 98/40 is 1429/420.
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,
40/42 = 40 × 20/42 × 20 = 800/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
98/40 = 98 × 21/40 × 21 = 2058/840 - Add the two like fractions:
800/840 + 2058/840 = 800 + 2058/840 = 2858/840 - 2858/840 simplified gives 1429/420
- So, 40/42 + 98/40 = 1429/420
In mixed form: 3169/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+98/40 40/84+98/40 40/42+98/80