Subtract 45/90 from 9/56
9/56 - 45/90 is -19/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
9/56 = 9 × 45/56 × 45 = 405/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
45/90 = 45 × 28/90 × 28 = 1260/2520 - Subtract the two like fractions:
405/2520 - 1260/2520 = 405 - 1260/2520 = -855/2520 - After reducing the fraction, the answer is -19/56
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