Add 84/32 and 28/21
1st number: 2 20/32, 2nd number: 1 7/21
84/32 + 28/21 is 95/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 21 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 32 × 21 = 672,
84/32 = 84 × 21/32 × 21 = 1764/672 - Likewise, for the 2nd fraction, since 21 × 32 = 672,
28/21 = 28 × 32/21 × 32 = 896/672 - Add the two like fractions:
1764/672 + 896/672 = 1764 + 896/672 = 2660/672 - 2660/672 simplified gives 95/24
- So, 84/32 + 28/21 = 95/24
In mixed form: 323/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/32+56/21 84/64+28/21 84/32+28/42 84/32+84/21 84/96+28/21 84/32+28/63