Add 42/40 and 7/72
1st number: 1 2/40, 2nd number: 7/72
42/40 + 7/72 is 413/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Add the two like fractions:
378/360 + 35/360 = 378 + 35/360 = 413/360 - So, 42/40 + 7/72 = 413/360
In mixed form: 153/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+7/72 42/40+14/72 42/80+7/72 42/40+21/72 42/40+35/72 42/40+49/72