Subtract 80/63 from 10/84
1st number: 10/84, 2nd number: 1 17/63
10/84 - 80/63 is -145/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
10/84 = 10 × 3/84 × 3 = 30/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
80/63 = 80 × 4/63 × 4 = 320/252 - Subtract the two like fractions:
30/252 - 320/252 = 30 - 320/252 = -290/252 - After reducing the fraction, the answer is -145/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84-80/63 30/84-80/63 50/84-80/63 70/84-80/63