Subtract 81/27 from 4/10, Solve 4/10

Subtract 81/27 from 4/10

1^st number: 4/10, 2^nd number: 3 0/27

4/10 - 81/27 is -13/5.

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

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 10 × 27 = 270,
4/10 = 4 × 27/10 × 27 = 108/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
81/27 = 81 × 10/27 × 10 = 810/270
Subtract the two like fractions:
108/270 - 810/270 = 108 - 810/270 = -702/270
After reducing the fraction, the answer is -13/5

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