Add 81/42 and 10/8
1st number: 1 39/42, 2nd number: 1 2/8
81/42 + 10/8 is 89/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
81/42 = 81 × 4/42 × 4 = 324/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168 - Add the two like fractions:
324/168 + 210/168 = 324 + 210/168 = 534/168 - 534/168 simplified gives 89/28
- So, 81/42 + 10/8 = 89/28
In mixed form: 35/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/42+20/8 81/84+10/8 81/42+10/16 81/42+30/8 81/42+10/24 81/42+50/8 81/42+10/40 81/42+70/8 81/42+10/56