Add 75/45 and 63/12
1st number: 1 30/45, 2nd number: 5 3/12
75/45 + 63/12 is 83/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
75/45 = 75 × 4/45 × 4 = 300/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
63/12 = 63 × 15/12 × 15 = 945/180 - Add the two like fractions:
300/180 + 945/180 = 300 + 945/180 = 1245/180 - 1245/180 simplified gives 83/12
- So, 75/45 + 63/12 = 83/12
In mixed form: 611/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/90+63/12 75/45+63/24 75/45+63/36 75/45+63/60 75/45+63/84