Subtract 90/45 from 49/56
1st number: 49/56, 2nd number: 2 0/45
49/56 - 90/45 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
49/56 = 49 × 45/56 × 45 = 2205/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
90/45 = 90 × 56/45 × 56 = 5040/2520 - Subtract the two like fractions:
2205/2520 - 5040/2520 = 2205 - 5040/2520 = -2835/2520 - After reducing the fraction, the answer is -9/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/56-90/45