Subtract 12/10 from 50/42, Solve 1 8/42

Subtract 12/10 from 50/42

1^st number: 1 8/42, 2^nd number: 1 2/10

50/42 - 12/10 is -1/105.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
50/42 = 50 × 5/42 × 5 = 250/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
12/10 = 12 × 21/10 × 21 = 252/210
Subtract the two like fractions:
250/210 - 252/210 = 250 - 252/210 = -2/210
After reducing the fraction, the answer is -1/105

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