Subtract 42/45 from 16/12, Solve 1 4/12

Subtract 42/45 from 16/12

1^st number: 1 4/12, 2^nd number: 42/45

16/12 - 42/45 is 2/5.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 12 × 15 = 180,
16/12 = 16 × 15/12 × 15 = 240/180
Likewise, for the 2nd fraction, since 45 × 4 = 180,
42/45 = 42 × 4/45 × 4 = 168/180
Subtract the two like fractions:
240/180 - 168/180 = 240 - 168/180 = 72/180
After reducing the fraction, the answer is 2/5

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