Add 90/3 and 70/72
1st number: 30 0/3, 2nd number: 70/72
90/3 + 70/72 is 1115/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
90/3 = 90 × 24/3 × 24 = 2160/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
2160/72 + 70/72 = 2160 + 70/72 = 2230/72 - 2230/72 simplified gives 1115/36
- So, 90/3 + 70/72 = 1115/36
In mixed form: 3035/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+70/72 90/9+70/72 90/15+70/72 90/21+70/72