Add 84/32 and 4/21
1st number: 2 20/32, 2nd number: 4/21
84/32 + 4/21 is 473/168.
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,
4/21 = 4 × 32/21 × 32 = 128/672 - Add the two like fractions:
1764/672 + 128/672 = 1764 + 128/672 = 1892/672 - 1892/672 simplified gives 473/168
- So, 84/32 + 4/21 = 473/168
In mixed form: 2137/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/32+8/21 84/64+4/21 84/32+4/42 84/32+12/21 84/96+4/21 84/32+4/63 84/32+20/21 84/32+28/21