Subtract 4/70 from 12/72
12/72 - 4/70 is 23/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
12/72 = 12 × 35/72 × 35 = 420/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
4/70 = 4 × 36/70 × 36 = 144/2520 - Subtract the two like fractions:
420/2520 - 144/2520 = 420 - 144/2520 = 276/2520 - After reducing the fraction, the answer is 23/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72-4/70 12/72-8/70 36/72-4/70 12/72-12/70 60/72-4/70 12/72-20/70 84/72-4/70 12/72-28/70