Subtract 14/64 from 30/21, Solve 1 9/21

Subtract 14/64 from 30/21

1^st number: 1 9/21, 2^nd number: 14/64

30/21 - 14/64 is 271/224.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344

Next, find the equivalent fraction of both fractional numbers with denominator 1344
For the 1st fraction, since 21 × 64 = 1344,
30/21 = 30 × 64/21 × 64 = 1920/1344
Likewise, for the 2nd fraction, since 64 × 21 = 1344,
14/64 = 14 × 21/64 × 21 = 294/1344
Subtract the two like fractions:
1920/1344 - 294/1344 = 1920 - 294/1344 = 1626/1344
After reducing the fraction, the answer is 271/224
In mixed form: 147/224

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