Add 30/80 and 72/32
1st number: 30/80, 2nd number: 2 8/32
30/80 + 72/32 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 80 × 2 = 160,
30/80 = 30 × 2/80 × 2 = 60/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
72/32 = 72 × 5/32 × 5 = 360/160 - Add the two like fractions:
60/160 + 360/160 = 60 + 360/160 = 420/160 - 420/160 simplified gives 21/8
- So, 30/80 + 72/32 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+72/32 30/80+72/64 90/80+72/32 30/80+72/96