Subtract 21/45 from 14/5, Solve 2 4/5

Subtract 21/45 from 14/5

1^st number: 2 4/5, 2^nd number: 21/45

14/5 - 21/45 is 7/3.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45

Next, find the equivalent fraction of both fractional numbers with denominator 45
For the 1st fraction, since 5 × 9 = 45,
14/5 = 14 × 9/5 × 9 = 126/45
Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45
Subtract the two like fractions:
126/45 - 21/45 = 126 - 21/45 = 105/45
After reducing the fraction, the answer is 7/3
In mixed form: 21/3

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