Subtract 7/80 from 35/70
35/70 - 7/80 is 33/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
35/70 = 35 × 8/70 × 8 = 280/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
7/80 = 7 × 7/80 × 7 = 49/560 - Subtract the two like fractions:
280/560 - 49/560 = 280 - 49/560 = 231/560 - After reducing the fraction, the answer is 33/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 35/70-14/80 35/70-21/80 35/70-35/80 35/70-49/80