Subtract 20/16 from 8/45, Solve 8/45

Subtract 20/16 from 8/45

1^st number: 8/45, 2^nd number: 1 4/16

8/45 - 20/16 is -193/180.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
8/45 = 8 × 16/45 × 16 = 128/720
Likewise, for the 2nd fraction, since 16 × 45 = 720,
20/16 = 20 × 45/16 × 45 = 900/720
Subtract the two like fractions:
128/720 - 900/720 = 128 - 900/720 = -772/720
After reducing the fraction, the answer is -193/180

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