Add 8/45 and 4/72
8/45 + 4/72 is 7/30.
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,
8/45 = 8 × 8/45 × 8 = 64/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
64/360 + 20/360 = 64 + 20/360 = 84/360 - 84/360 simplified gives 7/30
- So, 8/45 + 4/72 = 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45+4/72 8/45+8/72 8/90+4/72 24/45+4/72 8/45+12/72 40/45+4/72 8/45+20/72 56/45+4/72 8/45+28/72