Add 1/2 and 42/72
1/2 + 42/72 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 2 × 36 = 72,
1/2 = 1 × 36/2 × 36 = 36/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
36/72 + 42/72 = 36 + 42/72 = 78/72 - 78/72 simplified gives 13/12
- So, 1/2 + 42/72 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2+84/72 1/4+42/72 3/2+42/72 1/6+42/72 5/2+42/72 1/10+42/72 7/2+42/72 1/14+42/72