Add 24/21 and 90/36
1st number: 1 3/21, 2nd number: 2 18/36
24/21 + 90/36 is 51/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
24/21 = 24 × 12/21 × 12 = 288/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252 - Add the two like fractions:
288/252 + 630/252 = 288 + 630/252 = 918/252 - 918/252 simplified gives 51/14
- So, 24/21 + 90/36 = 51/14
In mixed form: 39/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+90/36 24/42+90/36 24/21+90/72 72/21+90/36 24/63+90/36