Subtract 84/72 from 30/28
1st number: 1 2/28, 2nd number: 1 12/72
30/28 - 84/72 is -2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
30/28 = 30 × 18/28 × 18 = 540/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
84/72 = 84 × 7/72 × 7 = 588/504 - Subtract the two like fractions:
540/504 - 588/504 = 540 - 588/504 = -48/504 - After reducing the fraction, the answer is -2/21
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