Subtract 12/42 from 16/15, Solve 1 1/15

Subtract 12/42 from 16/15

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

16/15 - 12/42 is 82/105.

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,
16/15 = 16 × 14/15 × 14 = 224/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210
Subtract the two like fractions:
224/210 - 60/210 = 224 - 60/210 = 164/210
After reducing the fraction, the answer is 82/105

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