Subtract 20/56 from 6/90
6/90 - 20/56 is -61/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
6/90 = 6 × 28/90 × 28 = 168/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
20/56 = 20 × 45/56 × 45 = 900/2520 - Subtract the two like fractions:
168/2520 - 900/2520 = 168 - 900/2520 = -732/2520 - After reducing the fraction, the answer is -61/210
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