Subtract 20/84 from 25/45
25/45 - 20/84 is 20/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
25/45 = 25 × 28/45 × 28 = 700/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
20/84 = 20 × 15/84 × 15 = 300/1260 - Subtract the two like fractions:
700/1260 - 300/1260 = 700 - 300/1260 = 400/1260 - After reducing the fraction, the answer is 20/63
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