Add 81/45 and 3/4
1st number: 1 36/45, 2nd number: 3/4
81/45 + 3/4 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
81/45 = 81 × 4/45 × 4 = 324/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
3/4 = 3 × 45/4 × 45 = 135/180 - Add the two like fractions:
324/180 + 135/180 = 324 + 135/180 = 459/180 - 459/180 simplified gives 51/20
- So, 81/45 + 3/4 = 51/20
In mixed form: 211/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/45+6/4 81/90+3/4 81/45+3/8 81/45+9/4 81/45+3/12 81/45+15/4 81/45+3/20 81/45+21/4 81/45+3/28