Subtract 18/25 from 20/28
20/28 - 18/25 is -1/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 25 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
20/28 = 20 × 25/28 × 25 = 500/700 - Likewise, for the 2nd fraction, since 25 × 28 = 700,
18/25 = 18 × 28/25 × 28 = 504/700 - Subtract the two like fractions:
500/700 - 504/700 = 500 - 504/700 = -4/700 - After reducing the fraction, the answer is -1/175
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