Subtract 63/14 from 90/72
1st number: 1 18/72, 2nd number: 4 7/14
90/72 - 63/14 is -13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 14 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Likewise, for the 2nd fraction, since 14 × 36 = 504,
63/14 = 63 × 36/14 × 36 = 2268/504 - Subtract the two like fractions:
630/504 - 2268/504 = 630 - 2268/504 = -1638/504 - After reducing the fraction, the answer is -13/4
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