Subtract 30/6 from 27/40, Solve 27/40

Subtract 30/6 from 27/40

1^st number: 27/40, 2^nd number: 5 0/6

27/40 - 30/6 is -173/40.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120
Likewise, for the 2nd fraction, since 6 × 20 = 120,
30/6 = 30 × 20/6 × 20 = 600/120
Subtract the two like fractions:
81/120 - 600/120 = 81 - 600/120 = -519/120
After reducing the fraction, the answer is -173/40

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