Subtract 18/70 from 7/32
7/32 - 18/70 is -43/1120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 70 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 32 × 35 = 1120,
7/32 = 7 × 35/32 × 35 = 245/1120 - Likewise, for the 2nd fraction, since 70 × 16 = 1120,
18/70 = 18 × 16/70 × 16 = 288/1120 - Subtract the two like fractions:
245/1120 - 288/1120 = 245 - 288/1120 = -43/1120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/32-18/70 7/32-36/70 7/64-18/70 21/32-18/70 7/32-54/70 7/96-18/70 35/32-18/70 7/32-90/70 49/32-18/70