Subtract 5/70 from 12/30
12/30 - 5/70 is 23/70.
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,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
5/70 = 5 × 3/70 × 3 = 15/210 - Subtract the two like fractions:
84/210 - 15/210 = 84 - 15/210 = 69/210 - After reducing the fraction, the answer is 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30-5/70 12/30-10/70 12/60-5/70 36/30-5/70 12/30-15/70 12/90-5/70 60/30-5/70 12/30-25/70 84/30-5/70 12/30-35/70