Subtract 9/32 from 20/45, Solve 20/45

Subtract 9/32 from 20/45

20/45 - 9/32 is 47/288.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 32 is 1440

Next, find the equivalent fraction of both fractional numbers with denominator 1440
For the 1st fraction, since 45 × 32 = 1440,
20/45 = 20 × 32/45 × 32 = 640/1440
Likewise, for the 2nd fraction, since 32 × 45 = 1440,
9/32 = 9 × 45/32 × 45 = 405/1440
Subtract the two like fractions:
640/1440 - 405/1440 = 640 - 405/1440 = 235/1440
After reducing the fraction, the answer is 47/288

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