Subtract 3/64 from 21/15, Solve 1 6/15

Subtract 3/64 from 21/15

1^st number: 1 6/15, 2^nd number: 3/64

21/15 - 3/64 is 433/320.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 64 is 960

Next, find the equivalent fraction of both fractional numbers with denominator 960
For the 1st fraction, since 15 × 64 = 960,
21/15 = 21 × 64/15 × 64 = 1344/960
Likewise, for the 2nd fraction, since 64 × 15 = 960,
3/64 = 3 × 15/64 × 15 = 45/960
Subtract the two like fractions:
1344/960 - 45/960 = 1344 - 45/960 = 1299/960
After reducing the fraction, the answer is 433/320
In mixed form: 1113/320

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