Subtract 3/4 from 70/80
70/80 - 3/4 is 1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
70/80 = 70 × 1/80 × 1 = 70/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
3/4 = 3 × 20/4 × 20 = 60/80 - Subtract the two like fractions:
70/80 - 60/80 = 70 - 60/80 = 10/80 - After reducing the fraction, the answer is 1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-6/4 70/80-3/8 70/80-9/4 70/80-3/12 70/80-15/4 70/80-3/20 70/80-21/4 70/80-3/28