Subtract 1/10 from 63/42, Solve 1 21/42

Subtract 1/10 from 63/42

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

63/42 - 1/10 is 7/5.

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,
63/42 = 63 × 5/42 × 5 = 315/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210
Subtract the two like fractions:
315/210 - 21/210 = 315 - 21/210 = 294/210
After reducing the fraction, the answer is 7/5
In mixed form: 12/5

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