Subtract 9/5 from 21/48, Solve 21/48

Subtract 9/5 from 21/48

1^st number: 21/48, 2^nd number: 1 4/5

21/48 - 9/5 is -109/80.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 5 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240
Likewise, for the 2nd fraction, since 5 × 48 = 240,
9/5 = 9 × 48/5 × 48 = 432/240
Subtract the two like fractions:
105/240 - 432/240 = 105 - 432/240 = -327/240
After reducing the fraction, the answer is -109/80

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