Subtract 8/21 from 84/12
1st number: 7 0/12, 2nd number: 8/21
84/12 - 8/21 is 139/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
84/12 = 84 × 7/12 × 7 = 588/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
8/21 = 8 × 4/21 × 4 = 32/84 - Subtract the two like fractions:
588/84 - 32/84 = 588 - 32/84 = 556/84 - After reducing the fraction, the answer is 139/21
- In mixed form: 613/21
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