Subtract 21/18 from 15/75
1st number: 15/75, 2nd number: 1 3/18
15/75 - 21/18 is -29/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
15/75 = 15 × 6/75 × 6 = 90/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Subtract the two like fractions:
90/450 - 525/450 = 90 - 525/450 = -435/450 - After reducing the fraction, the answer is -29/30
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