Add 15/21 and 90/32
1st number: 15/21, 2nd number: 2 26/32
15/21 + 90/32 is 395/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
15/21 = 15 × 32/21 × 32 = 480/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
90/32 = 90 × 21/32 × 21 = 1890/672 - Add the two like fractions:
480/672 + 1890/672 = 480 + 1890/672 = 2370/672 - 2370/672 simplified gives 395/112
- So, 15/21 + 90/32 = 395/112
In mixed form: 359/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+90/32 15/42+90/32 15/21+90/64 45/21+90/32 15/63+90/32 15/21+90/96 75/21+90/32