Add 81/36 and 70/28
1st number: 2 9/36, 2nd number: 2 14/28
81/36 + 70/28 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
81/36 = 81 × 7/36 × 7 = 567/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
70/28 = 70 × 9/28 × 9 = 630/252 - Add the two like fractions:
567/252 + 630/252 = 567 + 630/252 = 1197/252 - 1197/252 simplified gives 19/4
- So, 81/36 + 70/28 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/72+70/28 81/36+70/56 81/36+70/84