Subtract 7/8 from 45/54, Solve 45/54

Subtract 7/8 from 45/54

45/54 - 7/8 is -1/24.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 8 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 54 × 4 = 216,
45/54 = 45 × 4/54 × 4 = 180/216
Likewise, for the 2nd fraction, since 8 × 27 = 216,
7/8 = 7 × 27/8 × 27 = 189/216
Subtract the two like fractions:
180/216 - 189/216 = 180 - 189/216 = -9/216
After reducing the fraction, the answer is -1/24

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