Subtract 1/80 from 7/30
7/30 - 1/80 is 53/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
7/30 = 7 × 8/30 × 8 = 56/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
1/80 = 1 × 3/80 × 3 = 3/240 - Subtract the two like fractions:
56/240 - 3/240 = 56 - 3/240 = 53/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-1/80 7/30-2/80 7/60-1/80 21/30-1/80 7/30-3/80 7/90-1/80 35/30-1/80 7/30-5/80 49/30-1/80 7/30-7/80