Add 72/40 and 5/90
1st number: 1 32/40, 2nd number: 5/90
72/40 + 5/90 is 167/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 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 90 × 4 = 360,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
648/360 + 20/360 = 648 + 20/360 = 668/360 - 668/360 simplified gives 167/90
- So, 72/40 + 5/90 = 167/90
In mixed form: 177/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+10/90 72/80+5/90 72/40+15/90 72/40+25/90 72/40+35/90