Add 9/45 and 4/72
9/45 + 4/72 is 23/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
9/45 = 9 × 8/45 × 8 = 72/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
72/360 + 20/360 = 72 + 20/360 = 92/360 - 92/360 simplified gives 23/90
- So, 9/45 + 4/72 = 23/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/45+4/72 9/45+8/72 9/90+4/72 27/45+4/72 9/45+12/72 9/45+20/72 63/45+4/72 9/45+28/72