Add 9/14 and 75/90
9/14 + 75/90 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
9/14 = 9 × 45/14 × 45 = 405/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630 - Add the two like fractions:
405/630 + 525/630 = 405 + 525/630 = 930/630 - 930/630 simplified gives 31/21
- So, 9/14 + 75/90 = 31/21
In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/14+75/90 9/28+75/90 27/14+75/90 9/42+75/90 45/14+75/90 9/70+75/90 63/14+75/90 9/98+75/90