Subtract 9/10 from 45/54, Solve 45/54

Subtract 9/10 from 45/54

45/54 - 9/10 is -1/15.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 54 × 5 = 270,
45/54 = 45 × 5/54 × 5 = 225/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
9/10 = 9 × 27/10 × 27 = 243/270
Subtract the two like fractions:
225/270 - 243/270 = 225 - 243/270 = -18/270
After reducing the fraction, the answer is -1/15

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