Subtract 63/7 from 72/15
1st number: 4 12/15, 2nd number: 9 0/7
72/15 - 63/7 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
72/15 = 72 × 7/15 × 7 = 504/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
63/7 = 63 × 15/7 × 15 = 945/105 - Subtract the two like fractions:
504/105 - 945/105 = 504 - 945/105 = -441/105 - After reducing the fraction, the answer is -21/5
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