Add 75/72 and 5/90
1st number: 1 3/72, 2nd number: 5/90
75/72 + 5/90 is 79/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
375/360 + 20/360 = 375 + 20/360 = 395/360 - 395/360 simplified gives 79/72
- So, 75/72 + 5/90 = 79/72
In mixed form: 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/72+10/90 75/72+15/90 75/72+25/90 75/72+35/90