Subtract 54/8 from 81/70
1st number: 1 11/70, 2nd number: 6 6/8
81/70 - 54/8 is -783/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
81/70 = 81 × 4/70 × 4 = 324/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
54/8 = 54 × 35/8 × 35 = 1890/280 - Subtract the two like fractions:
324/280 - 1890/280 = 324 - 1890/280 = -1566/280 - After reducing the fraction, the answer is -783/140
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