Subtract 48/45 from 42/12, Solve 3 6/12

Subtract 48/45 from 42/12

1^st number: 3 6/12, 2^nd number: 1 3/45

42/12 - 48/45 is 73/30.

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,
42/12 = 42 × 15/12 × 15 = 630/180
Likewise, for the 2nd fraction, since 45 × 4 = 180,
48/45 = 48 × 4/45 × 4 = 192/180
Subtract the two like fractions:
630/180 - 192/180 = 630 - 192/180 = 438/180
After reducing the fraction, the answer is 73/30
In mixed form: 213/30

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