Add 90/72 and 7/15
1st number: 1 18/72, 2nd number: 7/15
90/72 + 7/15 is 103/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Likewise, for the 2nd fraction, since 15 × 24 = 360,
7/15 = 7 × 24/15 × 24 = 168/360 - Add the two like fractions:
450/360 + 168/360 = 450 + 168/360 = 618/360 - 618/360 simplified gives 103/60
- So, 90/72 + 7/15 = 103/60
In mixed form: 143/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+14/15 90/72+7/30 90/72+21/15 90/72+7/45 90/72+35/15 90/72+7/75 90/72+49/15