Add 45/30 and 42/12
1st number: 1 15/30, 2nd number: 3 6/12
45/30 + 42/12 is 5/1.
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,
42/12 = 42 × 5/12 × 5 = 210/60 - Add the two like fractions:
90/60 + 210/60 = 90 + 210/60 = 300/60 - 300/60 simplified gives 5/1
- So, 45/30 + 42/12 = 5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+42/12 45/30+84/12 45/60+42/12 45/30+42/24 45/90+42/12 45/30+42/36 45/30+42/60 45/30+42/84