Subtract 54/16 from 21/30
1st number: 21/30, 2nd number: 3 6/16
21/30 - 54/16 is -107/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
21/30 = 21 × 8/30 × 8 = 168/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
54/16 = 54 × 15/16 × 15 = 810/240 - Subtract the two like fractions:
168/240 - 810/240 = 168 - 810/240 = -642/240 - After reducing the fraction, the answer is -107/40
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