Add 1/5 and 20/72
1/5 + 20/72 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
1/5 = 1 × 72/5 × 72 = 72/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
72/360 + 100/360 = 72 + 100/360 = 172/360 - 172/360 simplified gives 43/90
- So, 1/5 + 20/72 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5+20/72 1/5+40/72 1/10+20/72 3/5+20/72 1/5+60/72 1/15+20/72 1/25+20/72 7/5+20/72 1/35+20/72