Add 4/20 and 42/72
4/20 + 42/72 is 47/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
4/20 = 4 × 18/20 × 18 = 72/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Add the two like fractions:
72/360 + 210/360 = 72 + 210/360 = 282/360 - 282/360 simplified gives 47/60
- So, 4/20 + 42/72 = 47/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+42/72 4/20+84/72 4/40+42/72 12/20+42/72 4/60+42/72 28/20+42/72