Subtract 4/70 from 84/80
1st number: 1 4/80, 2nd number: 4/70
84/80 - 4/70 is 139/140.
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,
84/80 = 84 × 7/80 × 7 = 588/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
4/70 = 4 × 8/70 × 8 = 32/560 - Subtract the two like fractions:
588/560 - 32/560 = 588 - 32/560 = 556/560 - After reducing the fraction, the answer is 139/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80-8/70 84/80-12/70 84/80-20/70 84/80-28/70