Subtract 30/72 from 2/84
2/84 - 30/72 is -11/28.
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,
2/84 = 2 × 6/84 × 6 = 12/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504 - Subtract the two like fractions:
12/504 - 210/504 = 12 - 210/504 = -198/504 - After reducing the fraction, the answer is -11/28
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