Add 84/28 and 20/8
1st number: 3 0/28, 2nd number: 2 4/8
84/28 + 20/8 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
84/28 = 84 × 2/28 × 2 = 168/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Add the two like fractions:
168/56 + 140/56 = 168 + 140/56 = 308/56 - 308/56 simplified gives 11/2
- So, 84/28 + 20/8 = 11/2
In mixed form: 51/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+40/8 84/56+20/8 84/28+20/16 84/28+60/8 84/28+20/24 84/28+20/40 84/28+20/56