Subtract 49/40 from 32/70
1st number: 32/70, 2nd number: 1 9/40
32/70 - 49/40 is -43/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
32/70 = 32 × 4/70 × 4 = 128/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
49/40 = 49 × 7/40 × 7 = 343/280 - Subtract the two like fractions:
128/280 - 343/280 = 128 - 343/280 = -215/280 - After reducing the fraction, the answer is -43/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/70-49/40 32/70-98/40 32/70-49/80 96/70-49/40