Add 7/4 and 42/72
1st number: 1 3/4, 2nd number: 42/72
7/4 + 42/72 is 7/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
7/4 = 7 × 18/4 × 18 = 126/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
126/72 + 42/72 = 126 + 42/72 = 168/72 - 168/72 simplified gives 7/3
- So, 7/4 + 42/72 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4+42/72 7/4+84/72 7/8+42/72 21/4+42/72 7/12+42/72 35/4+42/72 7/20+42/72 49/4+42/72 7/28+42/72