Add 70/81 and 12/54
70/81 + 12/54 is 88/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 54 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
70/81 = 70 × 2/81 × 2 = 140/162 - Likewise, for the 2nd fraction, since 54 × 3 = 162,
12/54 = 12 × 3/54 × 3 = 36/162 - Add the two like fractions:
140/162 + 36/162 = 140 + 36/162 = 176/162 - 176/162 simplified gives 88/81
- So, 70/81 + 12/54 = 88/81
In mixed form: 17/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81+24/54 70/81+36/54 70/81+60/54 70/81+84/54