Subtract 50/32 from 80/70
1st number: 1 10/70, 2nd number: 1 18/32
80/70 - 50/32 is -47/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
80/70 = 80 × 16/70 × 16 = 1280/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
50/32 = 50 × 35/32 × 35 = 1750/1120 - Subtract the two like fractions:
1280/1120 - 1750/1120 = 1280 - 1750/1120 = -470/1120 - After reducing the fraction, the answer is -47/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-50/64 80/70-50/96