Subtract 16/27 from 42/40, Solve 1 2/40

Subtract 16/27 from 42/40

1^st number: 1 2/40, 2^nd number: 16/27

42/40 - 16/27 is 247/540.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 40 × 27 = 1080,
42/40 = 42 × 27/40 × 27 = 1134/1080
Likewise, for the 2nd fraction, since 27 × 40 = 1080,
16/27 = 16 × 40/27 × 40 = 640/1080
Subtract the two like fractions:
1134/1080 - 640/1080 = 1134 - 640/1080 = 494/1080
After reducing the fraction, the answer is 247/540

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