Add 5/20 and 30/72
5/20 + 30/72 is 2/3.
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,
5/20 = 5 × 18/20 × 18 = 90/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
30/72 = 30 × 5/72 × 5 = 150/360 - Add the two like fractions:
90/360 + 150/360 = 90 + 150/360 = 240/360 - 240/360 simplified gives 2/3
- So, 5/20 + 30/72 = 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+30/72 5/20+60/72 5/40+30/72 15/20+30/72 5/20+90/72 5/60+30/72 25/20+30/72 35/20+30/72