Add 7/90 and 18/72
7/90 + 18/72 is 59/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
7/90 = 7 × 4/90 × 4 = 28/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Add the two like fractions:
28/360 + 90/360 = 28 + 90/360 = 118/360 - 118/360 simplified gives 59/180
- So, 7/90 + 18/72 = 59/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90+18/72 7/90+36/72 21/90+18/72 7/90+54/72 35/90+18/72 7/90+90/72 49/90+18/72