Subtract 45/50 from 16/40, Solve 16/40

Subtract 45/50 from 16/40

16/40 - 45/50 is -1/2.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 40 × 5 = 200,
16/40 = 16 × 5/40 × 5 = 80/200
Likewise, for the 2nd fraction, since 50 × 4 = 200,
45/50 = 45 × 4/50 × 4 = 180/200
Subtract the two like fractions:
80/200 - 180/200 = 80 - 180/200 = -100/200
After reducing the fraction, the answer is -1/2

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