Add 8/30 and 72/90
8/30 + 72/90 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
8/30 = 8 × 3/30 × 3 = 24/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Add the two like fractions:
24/90 + 72/90 = 24 + 72/90 = 96/90 - 96/90 simplified gives 16/15
- So, 8/30 + 72/90 = 16/15
In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30+72/90 8/60+72/90 24/30+72/90 8/90+72/90 40/30+72/90 56/30+72/90