Subtract 84/63 from 7/72
1st number: 7/72, 2nd number: 1 21/63
7/72 - 84/63 is -89/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
84/63 = 84 × 8/63 × 8 = 672/504 - Subtract the two like fractions:
49/504 - 672/504 = 49 - 672/504 = -623/504 - After reducing the fraction, the answer is -89/72
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