Subtract 21/63 from 75/7, Solve 10 5/7

Subtract 21/63 from 75/7

1^st number: 10 5/7, 2^nd number: 21/63

75/7 - 21/63 is 218/21.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 7 × 9 = 63,
75/7 = 75 × 9/7 × 9 = 675/63
Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63
Subtract the two like fractions:
675/63 - 21/63 = 675 - 21/63 = 654/63
After reducing the fraction, the answer is 218/21
In mixed form: 108/21

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