Add 7/18 and 70/72
7/18 + 70/72 is 49/36.
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,
7/18 = 7 × 4/18 × 4 = 28/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
28/72 + 70/72 = 28 + 70/72 = 98/72 - 98/72 simplified gives 49/36
- So, 7/18 + 70/72 = 49/36
In mixed form: 113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+70/72 7/36+70/72 21/18+70/72 7/54+70/72 35/18+70/72 7/90+70/72 49/18+70/72