Subtract 36/45 from 40/12, Solve 3 4/12

Subtract 36/45 from 40/12

1^st number: 3 4/12, 2^nd number: 36/45

40/12 - 36/45 is 38/15.

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,
40/12 = 40 × 15/12 × 15 = 600/180
Likewise, for the 2nd fraction, since 45 × 4 = 180,
36/45 = 36 × 4/45 × 4 = 144/180
Subtract the two like fractions:
600/180 - 144/180 = 600 - 144/180 = 456/180
After reducing the fraction, the answer is 38/15
In mixed form: 28/15

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