Subtract 28/80 from 32/70
32/70 - 28/80 is 3/28.
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,
32/70 = 32 × 8/70 × 8 = 256/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Subtract the two like fractions:
256/560 - 196/560 = 256 - 196/560 = 60/560 - After reducing the fraction, the answer is 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/70-28/80 32/70-56/80 96/70-28/80 32/70-84/80