Subtract 15/27 from 21/48
21/48 - 15/27 is -17/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 27 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 48 × 9 = 432,
21/48 = 21 × 9/48 × 9 = 189/432 - Likewise, for the 2nd fraction, since 27 × 16 = 432,
15/27 = 15 × 16/27 × 16 = 240/432 - Subtract the two like fractions:
189/432 - 240/432 = 189 - 240/432 = -51/432 - After reducing the fraction, the answer is -17/144
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