Subtract 21/36 from 30/56
30/56 - 21/36 is -1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 36 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Likewise, for the 2nd fraction, since 36 × 14 = 504,
21/36 = 21 × 14/36 × 14 = 294/504 - Subtract the two like fractions:
270/504 - 294/504 = 270 - 294/504 = -24/504 - After reducing the fraction, the answer is -1/21
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