Add 21/45 and 3/4
21/45 + 3/4 is 73/60.
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,
21/45 = 21 × 4/45 × 4 = 84/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
3/4 = 3 × 45/4 × 45 = 135/180 - Add the two like fractions:
84/180 + 135/180 = 84 + 135/180 = 219/180 - 219/180 simplified gives 73/60
- So, 21/45 + 3/4 = 73/60
In mixed form: 113/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+3/4 21/45+6/4 21/90+3/4 21/45+3/8 63/45+3/4 21/45+9/4 21/45+3/12 21/45+15/4 21/45+3/20 21/45+21/4 21/45+3/28