Add 4/18 and 84/72
1st number: 4/18, 2nd number: 1 12/72
4/18 + 84/72 is 25/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
4/18 = 4 × 4/18 × 4 = 16/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
84/72 = 84 × 1/72 × 1 = 84/72 - Add the two like fractions:
16/72 + 84/72 = 16 + 84/72 = 100/72 - 100/72 simplified gives 25/18
- So, 4/18 + 84/72 = 25/18
In mixed form: 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18+84/72 4/36+84/72 12/18+84/72 4/54+84/72 20/18+84/72 4/90+84/72 28/18+84/72