Subtract 30/72 from 4/84
4/84 - 30/72 is -31/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
4/84 = 4 × 6/84 × 6 = 24/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504 - Subtract the two like fractions:
24/504 - 210/504 = 24 - 210/504 = -186/504 - After reducing the fraction, the answer is -31/84
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