Subtract 24/80 from 4/70
4/70 - 24/80 is -17/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
4/70 = 4 × 8/70 × 8 = 32/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
24/80 = 24 × 7/80 × 7 = 168/560 - Subtract the two like fractions:
32/560 - 168/560 = 32 - 168/560 = -136/560 - After reducing the fraction, the answer is -17/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/70-24/80 4/70-48/80 12/70-24/80 4/70-72/80 20/70-24/80 28/70-24/80