Subtract 80/40 from 7/63
1st number: 7/63, 2nd number: 2 0/40
7/63 - 80/40 is -17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
7/63 = 7 × 40/63 × 40 = 280/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
80/40 = 80 × 63/40 × 63 = 5040/2520 - Subtract the two like fractions:
280/2520 - 5040/2520 = 280 - 5040/2520 = -4760/2520 - After reducing the fraction, the answer is -17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63-80/40 21/63-80/40 35/63-80/40 49/63-80/40