Subtract 50/12 from 60/40, Solve 1 20/40

Subtract 50/12 from 60/40

1^st number: 1 20/40, 2^nd number: 4 2/12

60/40 - 50/12 is -8/3.

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

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
60/40 = 60 × 3/40 × 3 = 180/120
Likewise, for the 2nd fraction, since 12 × 10 = 120,
50/12 = 50 × 10/12 × 10 = 500/120
Subtract the two like fractions:
180/120 - 500/120 = 180 - 500/120 = -320/120
After reducing the fraction, the answer is -8/3

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