Subtract 21/30 from 10/2, Solve 5 0/2

Subtract 21/30 from 10/2

1^st number: 5 0/2, 2^nd number: 21/30

10/2 - 21/30 is 43/10.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 2 × 15 = 30,
10/2 = 10 × 15/2 × 15 = 150/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30
Subtract the two like fractions:
150/30 - 21/30 = 150 - 21/30 = 129/30
After reducing the fraction, the answer is 43/10
In mixed form: 43/10

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