Subtract 32/42 from 72/15, Solve 4 12/15

Subtract 32/42 from 72/15

1^st number: 4 12/15, 2^nd number: 32/42

72/15 - 32/42 is 424/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
72/15 = 72 × 14/15 × 14 = 1008/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
32/42 = 32 × 5/42 × 5 = 160/210
Subtract the two like fractions:
1008/210 - 160/210 = 1008 - 160/210 = 848/210
After reducing the fraction, the answer is 424/105
In mixed form: 44/105

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