Add 72/90 and 10/32
72/90 + 10/32 is 89/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
72/90 = 72 × 16/90 × 16 = 1152/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
10/32 = 10 × 45/32 × 45 = 450/1440 - Add the two like fractions:
1152/1440 + 450/1440 = 1152 + 450/1440 = 1602/1440 - 1602/1440 simplified gives 89/80
- So, 72/90 + 10/32 = 89/80
In mixed form: 19/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+20/32 72/90+10/64 72/90+30/32 72/90+10/96 72/90+50/32 72/90+70/32