Subtract 21/9 from 21/50, Solve 21/50

Subtract 21/9 from 21/50

1^st number: 21/50, 2^nd number: 2 3/9

21/50 - 21/9 is -287/150.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450
Likewise, for the 2nd fraction, since 9 × 50 = 450,
21/9 = 21 × 50/9 × 50 = 1050/450
Subtract the two like fractions:
189/450 - 1050/450 = 189 - 1050/450 = -861/450
After reducing the fraction, the answer is -287/150

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