Subtract 42/48 from 5/45, Solve 5/45

Subtract 42/48 from 5/45

5/45 - 42/48 is -55/72.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
5/45 = 5 × 16/45 × 16 = 80/720
Likewise, for the 2nd fraction, since 48 × 15 = 720,
42/48 = 42 × 15/48 × 15 = 630/720
Subtract the two like fractions:
80/720 - 630/720 = 80 - 630/720 = -550/720
After reducing the fraction, the answer is -55/72

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