Add 36/21 and 90/4
1st number: 1 15/21, 2nd number: 22 2/4
36/21 + 90/4 is 339/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
90/4 = 90 × 21/4 × 21 = 1890/84 - Add the two like fractions:
144/84 + 1890/84 = 144 + 1890/84 = 2034/84 - 2034/84 simplified gives 339/14
- So, 36/21 + 90/4 = 339/14
In mixed form: 243/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21+90/4 36/42+90/4 36/21+90/8 36/63+90/4 36/21+90/12 36/21+90/20 36/21+90/28