Subtract 20/10 from 72/15, Solve 4 12/15

Subtract 20/10 from 72/15

1^st number: 4 12/15, 2^nd number: 2 0/10

72/15 - 20/10 is 14/5.

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

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 15 × 2 = 30,
72/15 = 72 × 2/15 × 2 = 144/30
Likewise, for the 2nd fraction, since 10 × 3 = 30,
20/10 = 20 × 3/10 × 3 = 60/30
Subtract the two like fractions:
144/30 - 60/30 = 144 - 60/30 = 84/30
After reducing the fraction, the answer is 14/5
In mixed form: 24/5

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