Add 90/4 and 70/81
1st number: 22 2/4, 2nd number: 70/81
90/4 + 70/81 is 3785/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
90/4 = 90 × 81/4 × 81 = 7290/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
70/81 = 70 × 4/81 × 4 = 280/324 - Add the two like fractions:
7290/324 + 280/324 = 7290 + 280/324 = 7570/324 - 7570/324 simplified gives 3785/162
- So, 90/4 + 70/81 = 3785/162
In mixed form: 2359/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+70/81 90/12+70/81 90/20+70/81 90/28+70/81