Subtract 28/64 from 20/7, Solve 2 6/7

Subtract 28/64 from 20/7

1^st number: 2 6/7, 2^nd number: 28/64

20/7 - 28/64 is 271/112.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 64 is 448

Next, find the equivalent fraction of both fractional numbers with denominator 448
For the 1st fraction, since 7 × 64 = 448,
20/7 = 20 × 64/7 × 64 = 1280/448
Likewise, for the 2nd fraction, since 64 × 7 = 448,
28/64 = 28 × 7/64 × 7 = 196/448
Subtract the two like fractions:
1280/448 - 196/448 = 1280 - 196/448 = 1084/448
After reducing the fraction, the answer is 271/112
In mixed form: 247/112

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