Add 90/30 and 9/72
1st number: 3 0/30, 2nd number: 9/72
90/30 + 9/72 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
90/30 = 90 × 12/30 × 12 = 1080/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Add the two like fractions:
1080/360 + 45/360 = 1080 + 45/360 = 1125/360 - 1125/360 simplified gives 25/8
- So, 90/30 + 9/72 = 25/8
In mixed form: 31/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+18/72 90/60+9/72 90/30+27/72 90/30+45/72 90/30+63/72