Subtract 75/54 from 21/30
1st number: 21/30, 2nd number: 1 21/54
21/30 - 75/54 is -31/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
75/54 = 75 × 5/54 × 5 = 375/270 - Subtract the two like fractions:
189/270 - 375/270 = 189 - 375/270 = -186/270 - After reducing the fraction, the answer is -31/45
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