Subtract 64/9 from 7/84, Solve 7/84

Subtract 64/9 from 7/84

1^st number: 7/84, 2^nd number: 7 1/9

7/84 - 64/9 is -253/36.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
7/84 = 7 × 3/84 × 3 = 21/252
Likewise, for the 2nd fraction, since 9 × 28 = 252,
64/9 = 64 × 28/9 × 28 = 1792/252
Subtract the two like fractions:
21/252 - 1792/252 = 21 - 1792/252 = -1771/252
After reducing the fraction, the answer is -253/36

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