Add 7/45 and 28/72
7/45 + 28/72 is 49/90.
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,
7/45 = 7 × 8/45 × 8 = 56/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Add the two like fractions:
56/360 + 140/360 = 56 + 140/360 = 196/360 - 196/360 simplified gives 49/90
- So, 7/45 + 28/72 = 49/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+28/72 7/45+56/72 7/90+28/72 21/45+28/72 7/45+84/72 35/45+28/72 49/45+28/72