Subtract 42/64 from 3/45, Solve 3/45

Subtract 42/64 from 3/45

3/45 - 42/64 is -283/480.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 64 is 2880

Next, find the equivalent fraction of both fractional numbers with denominator 2880
For the 1st fraction, since 45 × 64 = 2880,
3/45 = 3 × 64/45 × 64 = 192/2880
Likewise, for the 2nd fraction, since 64 × 45 = 2880,
42/64 = 42 × 45/64 × 45 = 1890/2880
Subtract the two like fractions:
192/2880 - 1890/2880 = 192 - 1890/2880 = -1698/2880
After reducing the fraction, the answer is -283/480

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