Subtract 42/24 from 1/84, Solve 1/84

Subtract 42/24 from 1/84

1^st number: 1/84, 2^nd number: 1 18/24

1/84 - 42/24 is -73/42.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 84 × 2 = 168,
1/84 = 1 × 2/84 × 2 = 2/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
42/24 = 42 × 7/24 × 7 = 294/168
Subtract the two like fractions:
2/168 - 294/168 = 2 - 294/168 = -292/168
After reducing the fraction, the answer is -73/42

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