Subtract 50/45 from 18/84, Solve 18/84

Subtract 50/45 from 18/84

1^st number: 18/84, 2^nd number: 1 5/45

18/84 - 50/45 is -113/126.

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,
18/84 = 18 × 15/84 × 15 = 270/1260
Likewise, for the 2nd fraction, since 45 × 28 = 1260,
50/45 = 50 × 28/45 × 28 = 1400/1260
Subtract the two like fractions:
270/1260 - 1400/1260 = 270 - 1400/1260 = -1130/1260
After reducing the fraction, the answer is -113/126

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