Add 9/14 and 90/21
1st number: 9/14, 2nd number: 4 6/21
9/14 + 90/21 is 69/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
9/14 = 9 × 3/14 × 3 = 27/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
90/21 = 90 × 2/21 × 2 = 180/42 - Add the two like fractions:
27/42 + 180/42 = 27 + 180/42 = 207/42 - 207/42 simplified gives 69/14
- So, 9/14 + 90/21 = 69/14
In mixed form: 413/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/14+90/21 9/28+90/21 9/14+90/42 27/14+90/21 9/42+90/21 9/14+90/63 45/14+90/21 9/70+90/21 63/14+90/21 9/98+90/21