Add 70/72 and 30/27
1st number: 70/72, 2nd number: 1 3/27
70/72 + 30/27 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
70/72 = 70 × 3/72 × 3 = 210/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
30/27 = 30 × 8/27 × 8 = 240/216 - Add the two like fractions:
210/216 + 240/216 = 210 + 240/216 = 450/216 - 450/216 simplified gives 25/12
- So, 70/72 + 30/27 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+60/27 70/72+30/54 70/72+90/27 70/72+30/81