Add 98/42 and 3/90
1st number: 2 14/42, 2nd number: 3/90
98/42 + 3/90 is 71/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
98/42 = 98 × 15/42 × 15 = 1470/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Add the two like fractions:
1470/630 + 21/630 = 1470 + 21/630 = 1491/630 - 1491/630 simplified gives 71/30
- So, 98/42 + 3/90 = 71/30
In mixed form: 211/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42+6/90 98/84+3/90 98/42+9/90 98/42+15/90 98/42+21/90