Add 3/4 and 81/45
1st number: 3/4, 2nd number: 1 36/45
3/4 + 81/45 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
3/4 = 3 × 45/4 × 45 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
81/45 = 81 × 4/45 × 4 = 324/180 - Add the two like fractions:
135/180 + 324/180 = 135 + 324/180 = 459/180 - 459/180 simplified gives 51/20
- So, 3/4 + 81/45 = 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: 6/4+81/45 3/8+81/45 3/4+81/90 9/4+81/45 3/12+81/45 15/4+81/45 3/20+81/45 21/4+81/45 3/28+81/45