Subtract 40/10 from 84/63
1st number: 1 21/63, 2nd number: 4 0/10
84/63 - 40/10 is -8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
40/10 = 40 × 63/10 × 63 = 2520/630 - Subtract the two like fractions:
840/630 - 2520/630 = 840 - 2520/630 = -1680/630 - After reducing the fraction, the answer is -8/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63-80/10 84/63-40/20 84/63-40/30 84/63-40/50 84/63-40/70