Subtract 49/10 from 5/42, Solve 5/42

Subtract 49/10 from 5/42

1^st number: 5/42, 2^nd number: 4 9/10

5/42 - 49/10 is -502/105.

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,
5/42 = 5 × 5/42 × 5 = 25/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
49/10 = 49 × 21/10 × 21 = 1029/210
Subtract the two like fractions:
25/210 - 1029/210 = 25 - 1029/210 = -1004/210
After reducing the fraction, the answer is -502/105

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