Subtract 20/40 from 5/9, Solve 5/9

Subtract 20/40 from 5/9

5/9 - 20/40 is 1/18.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 9 × 40 = 360,
5/9 = 5 × 40/9 × 40 = 200/360
Likewise, for the 2nd fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360
Subtract the two like fractions:
200/360 - 180/360 = 200 - 180/360 = 20/360
After reducing the fraction, the answer is 1/18

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