Add 81/4 and 8/45
1st number: 20 1/4, 2nd number: 8/45
81/4 + 8/45 is 3677/180.
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,
81/4 = 81 × 45/4 × 45 = 3645/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
8/45 = 8 × 4/45 × 4 = 32/180 - Add the two like fractions:
3645/180 + 32/180 = 3645 + 32/180 = 3677/180 - So, 81/4 + 8/45 = 3677/180
In mixed form: 2077/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+16/45 81/8+8/45 81/4+8/90 81/4+24/45 81/12+8/45 81/4+40/45 81/20+8/45 81/4+56/45 81/28+8/45