Subtract 24/70 from 9/30
9/30 - 24/70 is -3/70.
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,
9/30 = 9 × 7/30 × 7 = 63/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
24/70 = 24 × 3/70 × 3 = 72/210 - Subtract the two like fractions:
63/210 - 72/210 = 63 - 72/210 = -9/210 - After reducing the fraction, the answer is -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-24/70 9/30-48/70 9/60-24/70 27/30-24/70 9/30-72/70 9/90-24/70 45/30-24/70 63/30-24/70