Subtract 9/15 from 30/10, Solve 3 0/10

Subtract 9/15 from 30/10

1^st number: 3 0/10, 2^nd number: 9/15

30/10 - 9/15 is 12/5.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 10 × 3 = 30,
30/10 = 30 × 3/10 × 3 = 90/30
Likewise, for the 2nd fraction, since 15 × 2 = 30,
9/15 = 9 × 2/15 × 2 = 18/30
Subtract the two like fractions:
90/30 - 18/30 = 90 - 18/30 = 72/30
After reducing the fraction, the answer is 12/5
In mixed form: 22/5

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