Subtract 3/45 from 25/42, Solve 25/42

Subtract 3/45 from 25/42

25/42 - 3/45 is 37/70.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
25/42 = 25 × 15/42 × 15 = 375/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
3/45 = 3 × 14/45 × 14 = 42/630
Subtract the two like fractions:
375/630 - 42/630 = 375 - 42/630 = 333/630
After reducing the fraction, the answer is 37/70

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