Subtract 5/42 from 3/45, Solve 3/45

Subtract 5/42 from 3/45

3/45 - 5/42 is -11/210.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
3/45 = 3 × 14/45 × 14 = 42/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
5/42 = 5 × 15/42 × 15 = 75/630
Subtract the two like fractions:
42/630 - 75/630 = 42 - 75/630 = -33/630
After reducing the fraction, the answer is -11/210

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