Subtract 63/18 from 63/72
1st number: 63/72, 2nd number: 3 9/18
63/72 - 63/18 is -21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
63/72 = 63 × 1/72 × 1 = 63/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
63/18 = 63 × 4/18 × 4 = 252/72 - Subtract the two like fractions:
63/72 - 252/72 = 63 - 252/72 = -189/72 - After reducing the fraction, the answer is -21/8
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