Subtract 45/42 from 28/50, Solve 28/50

Subtract 45/42 from 28/50

1^st number: 28/50, 2^nd number: 1 3/42

28/50 - 45/42 is -179/350.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 50 × 21 = 1050,
28/50 = 28 × 21/50 × 21 = 588/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
45/42 = 45 × 25/42 × 25 = 1125/1050
Subtract the two like fractions:
588/1050 - 1125/1050 = 588 - 1125/1050 = -537/1050
After reducing the fraction, the answer is -179/350

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