Subtract 81/49 from 40/84
1st number: 40/84, 2nd number: 1 32/49
40/84 - 81/49 is -173/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 49 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 84 × 7 = 588,
40/84 = 40 × 7/84 × 7 = 280/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
81/49 = 81 × 12/49 × 12 = 972/588 - Subtract the two like fractions:
280/588 - 972/588 = 280 - 972/588 = -692/588 - After reducing the fraction, the answer is -173/147
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