Add 30/12 and 70/72
1st number: 2 6/12, 2nd number: 70/72
30/12 + 70/72 is 125/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
30/12 = 30 × 6/12 × 6 = 180/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
180/72 + 70/72 = 180 + 70/72 = 250/72 - 250/72 simplified gives 125/36
- So, 30/12 + 70/72 = 125/36
In mixed form: 317/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+70/72 30/24+70/72 90/12+70/72 30/36+70/72 30/60+70/72 30/84+70/72