Add 45/30 and 75/12
1st number: 1 15/30, 2nd number: 6 3/12
45/30 + 75/12 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
75/12 = 75 × 5/12 × 5 = 375/60 - Add the two like fractions:
90/60 + 375/60 = 90 + 375/60 = 465/60 - 465/60 simplified gives 31/4
- So, 45/30 + 75/12 = 31/4
In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+75/12 45/60+75/12 45/30+75/24 45/90+75/12 45/30+75/36 45/30+75/60 45/30+75/84