Subtract 45/90 from 15/56
15/56 - 45/90 is -13/56.
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,
15/56 = 15 × 45/56 × 45 = 675/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
45/90 = 45 × 28/90 × 28 = 1260/2520 - Subtract the two like fractions:
675/2520 - 1260/2520 = 675 - 1260/2520 = -585/2520 - After reducing the fraction, the answer is -13/56
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