Subtract 7/10 from 25/54, Solve 25/54

Subtract 7/10 from 25/54

25/54 - 7/10 is -32/135.

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,
25/54 = 25 × 5/54 × 5 = 125/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
7/10 = 7 × 27/10 × 27 = 189/270
Subtract the two like fractions:
125/270 - 189/270 = 125 - 189/270 = -64/270
After reducing the fraction, the answer is -32/135

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