Subtract 18/90 from 2/56
2/56 - 18/90 is -23/140.
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,
2/56 = 2 × 45/56 × 45 = 90/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
18/90 = 18 × 28/90 × 28 = 504/2520 - Subtract the two like fractions:
90/2520 - 504/2520 = 90 - 504/2520 = -414/2520 - After reducing the fraction, the answer is -23/140
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