Subtract 50/45 from 81/84, Solve 81/84

Subtract 50/45 from 81/84

1^st number: 81/84, 2^nd number: 1 5/45

81/84 - 50/45 is -37/252.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 84 × 15 = 1260,
81/84 = 81 × 15/84 × 15 = 1215/1260
Likewise, for the 2nd fraction, since 45 × 28 = 1260,
50/45 = 50 × 28/45 × 28 = 1400/1260
Subtract the two like fractions:
1215/1260 - 1400/1260 = 1215 - 1400/1260 = -185/1260
After reducing the fraction, the answer is -37/252

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