Subtract 48/9 from 21/64, Solve 21/64

Subtract 48/9 from 21/64

1^st number: 21/64, 2^nd number: 5 3/9

21/64 - 48/9 is -961/192.

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 9 is 576

Next, find the equivalent fraction of both fractional numbers with denominator 576
For the 1st fraction, since 64 × 9 = 576,
21/64 = 21 × 9/64 × 9 = 189/576
Likewise, for the 2nd fraction, since 9 × 64 = 576,
48/9 = 48 × 64/9 × 64 = 3072/576
Subtract the two like fractions:
189/576 - 3072/576 = 189 - 3072/576 = -2883/576
After reducing the fraction, the answer is -961/192

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