Subtract 12/70 from 70/80
70/80 - 12/70 is 197/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
12/70 = 12 × 8/70 × 8 = 96/560 - Subtract the two like fractions:
490/560 - 96/560 = 490 - 96/560 = 394/560 - After reducing the fraction, the answer is 197/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-24/70 70/80-36/70 70/80-60/70 70/80-84/70