Add 42/72 and 6/20
42/72 + 6/20 is 53/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 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 20 × 18 = 360,
6/20 = 6 × 18/20 × 18 = 108/360 - Add the two like fractions:
210/360 + 108/360 = 210 + 108/360 = 318/360 - 318/360 simplified gives 53/60
- So, 42/72 + 6/20 = 53/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+6/20 42/72+12/20 42/72+6/40 42/72+18/20 42/72+6/60 42/72+30/20 42/72+42/20