Subtract 45/7 from 54/40, Solve 1 14/40

Subtract 45/7 from 54/40

1^st number: 1 14/40, 2^nd number: 6 3/7

54/40 - 45/7 is -711/140.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
54/40 = 54 × 7/40 × 7 = 378/280
Likewise, for the 2nd fraction, since 7 × 40 = 280,
45/7 = 45 × 40/7 × 40 = 1800/280
Subtract the two like fractions:
378/280 - 1800/280 = 378 - 1800/280 = -1422/280
After reducing the fraction, the answer is -711/140

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