Add 12/27 and 70/72
12/27 + 70/72 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
12/27 = 12 × 8/27 × 8 = 96/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
70/72 = 70 × 3/72 × 3 = 210/216 - Add the two like fractions:
96/216 + 210/216 = 96 + 210/216 = 306/216 - 306/216 simplified gives 17/12
- So, 12/27 + 70/72 = 17/12
In mixed form: 15/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/27+70/72 12/54+70/72 36/27+70/72 12/81+70/72 60/27+70/72 84/27+70/72