Subtract 12/40 from 28/12, Solve 2 4/12

Subtract 12/40 from 28/12

1^st number: 2 4/12, 2^nd number: 12/40

28/12 - 12/40 is 61/30.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 12 × 10 = 120,
28/12 = 28 × 10/12 × 10 = 280/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120
Subtract the two like fractions:
280/120 - 36/120 = 280 - 36/120 = 244/120
After reducing the fraction, the answer is 61/30
In mixed form: 21/30

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