Subtract 42/10 from 12/75, Solve 12/75

Subtract 42/10 from 12/75

1^st number: 12/75, 2^nd number: 4 2/10

12/75 - 42/10 is -101/25.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 10 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 75 × 2 = 150,
12/75 = 12 × 2/75 × 2 = 24/150
Likewise, for the 2nd fraction, since 10 × 15 = 150,
42/10 = 42 × 15/10 × 15 = 630/150
Subtract the two like fractions:
24/150 - 630/150 = 24 - 630/150 = -606/150
After reducing the fraction, the answer is -101/25

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