Subtract 63/4 from 54/42
1st number: 1 12/42, 2nd number: 15 3/4
54/42 - 63/4 is -405/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
54/42 = 54 × 2/42 × 2 = 108/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
63/4 = 63 × 21/4 × 21 = 1323/84 - Subtract the two like fractions:
108/84 - 1323/84 = 108 - 1323/84 = -1215/84 - After reducing the fraction, the answer is -405/28
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