Subtract 20/50 from 4/45, Solve 4/45

Subtract 20/50 from 4/45

4/45 - 20/50 is -14/45.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 50 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 45 × 10 = 450,
4/45 = 4 × 10/45 × 10 = 40/450
Likewise, for the 2nd fraction, since 50 × 9 = 450,
20/50 = 20 × 9/50 × 9 = 180/450
Subtract the two like fractions:
40/450 - 180/450 = 40 - 180/450 = -140/450
After reducing the fraction, the answer is -14/45

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