Add 42/72 and 27/15
1st number: 42/72, 2nd number: 1 12/15
42/72 + 27/15 is 143/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Likewise, for the 2nd fraction, since 15 × 24 = 360,
27/15 = 27 × 24/15 × 24 = 648/360 - Add the two like fractions:
210/360 + 648/360 = 210 + 648/360 = 858/360 - 858/360 simplified gives 143/60
- So, 42/72 + 27/15 = 143/60
In mixed form: 223/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+27/15 42/72+54/15 42/72+27/30 42/72+81/15 42/72+27/45 42/72+27/75