Subtract 42/10 from 5/27, Solve 5/27

Subtract 42/10 from 5/27

1^st number: 5/27, 2^nd number: 4 2/10

5/27 - 42/10 is -542/135.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 27 × 10 = 270,
5/27 = 5 × 10/27 × 10 = 50/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
42/10 = 42 × 27/10 × 27 = 1134/270
Subtract the two like fractions:
50/270 - 1134/270 = 50 - 1134/270 = -1084/270
After reducing the fraction, the answer is -542/135

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