Add 75/40 and 20/72
1st number: 1 35/40, 2nd number: 20/72
75/40 + 20/72 is 155/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
75/40 = 75 × 9/40 × 9 = 675/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
675/360 + 100/360 = 675 + 100/360 = 775/360 - 775/360 simplified gives 155/72
- So, 75/40 + 20/72 = 155/72
In mixed form: 211/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/40+40/72 75/80+20/72 75/40+60/72