Subtract 63/42 from 6/10, Solve 6/10

Subtract 63/42 from 6/10

1^st number: 6/10, 2^nd number: 1 21/42

6/10 - 63/42 is -9/10.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
6/10 = 6 × 21/10 × 21 = 126/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210
Subtract the two like fractions:
126/210 - 315/210 = 126 - 315/210 = -189/210
After reducing the fraction, the answer is -9/10

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