Add 18/72 and 45/12
1st number: 18/72, 2nd number: 3 9/12
18/72 + 45/12 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
45/12 = 45 × 6/12 × 6 = 270/72 - Add the two like fractions:
18/72 + 270/72 = 18 + 270/72 = 288/72 - 288/72 simplified gives 4/1
- So, 18/72 + 45/12 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/72+45/12 18/72+90/12 18/72+45/24 54/72+45/12 18/72+45/36 90/72+45/12 18/72+45/60 18/72+45/84