Subtract 14/8 from 72/84, Solve 72/84

Subtract 14/8 from 72/84

1^st number: 72/84, 2^nd number: 1 6/8

72/84 - 14/8 is -25/28.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 84 × 2 = 168,
72/84 = 72 × 2/84 × 2 = 144/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
14/8 = 14 × 21/8 × 21 = 294/168
Subtract the two like fractions:
144/168 - 294/168 = 144 - 294/168 = -150/168
After reducing the fraction, the answer is -25/28

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