Subtract 32/70 from 1/30
1/30 - 32/70 is -89/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
1/30 = 1 × 7/30 × 7 = 7/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
32/70 = 32 × 3/70 × 3 = 96/210 - Subtract the two like fractions:
7/210 - 96/210 = 7 - 96/210 = -89/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30-32/70 1/30-64/70 1/60-32/70 3/30-32/70 1/30-96/70 1/90-32/70 5/30-32/70 7/30-32/70