Subtract 1/28 from 3/90
3/90 - 1/28 is -1/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
1/28 = 1 × 45/28 × 45 = 45/1260 - Subtract the two like fractions:
42/1260 - 45/1260 = 42 - 45/1260 = -3/1260 - After reducing the fraction, the answer is -1/420
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