Subtract 6/54 from 70/80
70/80 - 6/54 is 55/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
70/80 = 70 × 27/80 × 27 = 1890/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
6/54 = 6 × 40/54 × 40 = 240/2160 - Subtract the two like fractions:
1890/2160 - 240/2160 = 1890 - 240/2160 = 1650/2160 - After reducing the fraction, the answer is 55/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-12/54 70/80-18/54 70/80-30/54 70/80-42/54