Subtract 42/6 from 72/84
1st number: 72/84, 2nd number: 7 0/6
72/84 - 42/6 is -43/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 6 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
72/84 = 72 × 1/84 × 1 = 72/84 - Likewise, for the 2nd fraction, since 6 × 14 = 84,
42/6 = 42 × 14/6 × 14 = 588/84 - Subtract the two like fractions:
72/84 - 588/84 = 72 - 588/84 = -516/84 - After reducing the fraction, the answer is -43/7
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