Subtract 4/8 from 21/25
21/25 - 4/8 is 17/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 8 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
21/25 = 21 × 8/25 × 8 = 168/200 - Likewise, for the 2nd fraction, since 8 × 25 = 200,
4/8 = 4 × 25/8 × 25 = 100/200 - Subtract the two like fractions:
168/200 - 100/200 = 168 - 100/200 = 68/200 - After reducing the fraction, the answer is 17/50
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