Add 1/45 and 75/12
1st number: 1/45, 2nd number: 6 3/12
1/45 + 75/12 is 1129/180.
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,
1/45 = 1 × 4/45 × 4 = 4/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
75/12 = 75 × 15/12 × 15 = 1125/180 - Add the two like fractions:
4/180 + 1125/180 = 4 + 1125/180 = 1129/180 - So, 1/45 + 75/12 = 1129/180
In mixed form: 649/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45+75/12 1/90+75/12 1/45+75/24 3/45+75/12 1/45+75/36 5/45+75/12 1/45+75/60 7/45+75/12 1/45+75/84