Add 72/40 and 2/18
1st number: 1 32/40, 2nd number: 2/18
72/40 + 2/18 is 86/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
2/18 = 2 × 20/18 × 20 = 40/360 - Add the two like fractions:
648/360 + 40/360 = 648 + 40/360 = 688/360 - 688/360 simplified gives 86/45
- So, 72/40 + 2/18 = 86/45
In mixed form: 141/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+4/18 72/80+2/18 72/40+2/36 72/40+6/18 72/40+2/54 72/40+10/18 72/40+2/90 72/40+14/18