Subtract 48/40 from 20/12, Solve 1 8/12

Subtract 48/40 from 20/12

1^st number: 1 8/12, 2^nd number: 1 8/40

20/12 - 48/40 is 7/15.

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,
20/12 = 20 × 10/12 × 10 = 200/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
48/40 = 48 × 3/40 × 3 = 144/120
Subtract the two like fractions:
200/120 - 144/120 = 200 - 144/120 = 56/120
After reducing the fraction, the answer is 7/15

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