Subtract 90/84 from 10/45
1st number: 10/45, 2nd number: 1 6/84
10/45 - 90/84 is -107/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
10/45 = 10 × 28/45 × 28 = 280/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
90/84 = 90 × 15/84 × 15 = 1350/1260 - Subtract the two like fractions:
280/1260 - 1350/1260 = 280 - 1350/1260 = -1070/1260 - After reducing the fraction, the answer is -107/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45-90/84 10/90-90/84 30/45-90/84 50/45-90/84 70/45-90/84