Add 70/90 and 12/24
70/90 + 12/24 is 23/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
12/24 = 12 × 15/24 × 15 = 180/360 - Add the two like fractions:
280/360 + 180/360 = 280 + 180/360 = 460/360 - 460/360 simplified gives 23/18
- So, 70/90 + 12/24 = 23/18
In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+12/48 70/90+36/24 70/90+12/72 70/90+60/24 70/90+84/24