Subtract 1/10 from 90/27, Solve 3 9/27

Subtract 1/10 from 90/27

1^st number: 3 9/27, 2^nd number: 1/10

90/27 - 1/10 is 97/30.

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,
90/27 = 90 × 10/27 × 10 = 900/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
1/10 = 1 × 27/10 × 27 = 27/270
Subtract the two like fractions:
900/270 - 27/270 = 900 - 27/270 = 873/270
After reducing the fraction, the answer is 97/30
In mixed form: 37/30

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