Subtract 5/70 from 54/80
54/80 - 5/70 is 169/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
5/70 = 5 × 8/70 × 8 = 40/560 - Subtract the two like fractions:
378/560 - 40/560 = 378 - 40/560 = 338/560 - After reducing the fraction, the answer is 169/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/80-10/70 54/80-15/70 54/80-25/70 54/80-35/70