Add 64/90 and 7/12
64/90 + 7/12 is 233/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
64/90 = 64 × 2/90 × 2 = 128/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
7/12 = 7 × 15/12 × 15 = 105/180 - Add the two like fractions:
128/180 + 105/180 = 128 + 105/180 = 233/180 - So, 64/90 + 7/12 = 233/180
In mixed form: 153/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/90+14/12 64/90+7/24 64/90+21/12 64/90+7/36 64/90+35/12 64/90+7/60 64/90+49/12 64/90+7/84