Add 90/36 and 48/21
1st number: 2 18/36, 2nd number: 2 6/21
90/36 + 48/21 is 67/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
48/21 = 48 × 12/21 × 12 = 576/252 - Add the two like fractions:
630/252 + 576/252 = 630 + 576/252 = 1206/252 - 1206/252 simplified gives 67/14
- So, 90/36 + 48/21 = 67/14
In mixed form: 411/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+96/21 90/72+48/21 90/36+48/42 90/36+48/63