Add 80/20 and 4/72
1st number: 4 0/20, 2nd number: 4/72
80/20 + 4/72 is 73/18.
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,
80/20 = 80 × 18/20 × 18 = 1440/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
1440/360 + 20/360 = 1440 + 20/360 = 1460/360 - 1460/360 simplified gives 73/18
- So, 80/20 + 4/72 = 73/18
In mixed form: 41/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20+8/72 80/40+4/72 80/20+12/72 80/60+4/72 80/20+20/72 80/20+28/72