Subtract 27/42 from 20/25, Solve 20/25

Subtract 27/42 from 20/25

20/25 - 27/42 is 11/70.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 25 × 42 = 1050,
20/25 = 20 × 42/25 × 42 = 840/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
27/42 = 27 × 25/42 × 25 = 675/1050
Subtract the two like fractions:
840/1050 - 675/1050 = 840 - 675/1050 = 165/1050
After reducing the fraction, the answer is 11/70

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