Subtract 8/70 from 12/72
12/72 - 8/70 is 11/210.
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,
8/70 = 8 × 36/70 × 36 = 288/2520 - Subtract the two like fractions:
420/2520 - 288/2520 = 420 - 288/2520 = 132/2520 - After reducing the fraction, the answer is 11/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72-8/70 12/72-16/70 36/72-8/70 12/72-24/70 60/72-8/70 12/72-40/70 84/72-8/70 12/72-56/70