Add 75/18 and 6/21
1st number: 4 3/18, 2nd number: 6/21
75/18 + 6/21 is 187/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
75/18 = 75 × 7/18 × 7 = 525/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
6/21 = 6 × 6/21 × 6 = 36/126 - Add the two like fractions:
525/126 + 36/126 = 525 + 36/126 = 561/126 - 561/126 simplified gives 187/42
- So, 75/18 + 6/21 = 187/42
In mixed form: 419/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/18+12/21 75/36+6/21 75/18+6/42 75/18+18/21 75/54+6/21 75/18+6/63 75/18+30/21 75/90+6/21 75/18+42/21