Subtract 21/64 from 15/9, Solve 1 6/9

Subtract 21/64 from 15/9

1^st number: 1 6/9, 2^nd number: 21/64

15/9 - 21/64 is 257/192.

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

Next, find the equivalent fraction of both fractional numbers with denominator 576
For the 1st fraction, since 9 × 64 = 576,
15/9 = 15 × 64/9 × 64 = 960/576
Likewise, for the 2nd fraction, since 64 × 9 = 576,
21/64 = 21 × 9/64 × 9 = 189/576
Subtract the two like fractions:
960/576 - 189/576 = 960 - 189/576 = 771/576
After reducing the fraction, the answer is 257/192
In mixed form: 165/192

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