Add 42/5 and 72/12
1st number: 8 2/5, 2nd number: 6 0/12
42/5 + 72/12 is 72/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
42/5 = 42 × 12/5 × 12 = 504/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60 - Add the two like fractions:
504/60 + 360/60 = 504 + 360/60 = 864/60 - 864/60 simplified gives 72/5
- So, 42/5 + 72/12 = 72/5
In mixed form: 142/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+72/12 42/10+72/12 42/5+72/24 42/15+72/12 42/5+72/36 42/25+72/12 42/5+72/60 42/35+72/12 42/5+72/84