Subtract 42/3 from 63/18
1st number: 3 9/18, 2nd number: 14 0/3
63/18 - 42/3 is -21/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 3 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
63/18 = 63 × 1/18 × 1 = 63/18 - Likewise, for the 2nd fraction, since 3 × 6 = 18,
42/3 = 42 × 6/3 × 6 = 252/18 - Subtract the two like fractions:
63/18 - 252/18 = 63 - 252/18 = -189/18 - After reducing the fraction, the answer is -21/2
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