Add 75/35 and 21/90
1st number: 2 5/35, 2nd number: 21/90
75/35 + 21/90 is 499/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
75/35 = 75 × 18/35 × 18 = 1350/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Add the two like fractions:
1350/630 + 147/630 = 1350 + 147/630 = 1497/630 - 1497/630 simplified gives 499/210
- So, 75/35 + 21/90 = 499/210
In mixed form: 279/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/35+42/90 75/70+21/90 75/35+63/90