Subtract 21/63 from 45/6, Solve 7 3/6

Subtract 21/63 from 45/6

1^st number: 7 3/6, 2^nd number: 21/63

45/6 - 21/63 is 43/6.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 6 × 21 = 126,
45/6 = 45 × 21/6 × 21 = 945/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126
Subtract the two like fractions:
945/126 - 42/126 = 945 - 42/126 = 903/126
After reducing the fraction, the answer is 43/6
In mixed form: 71/6

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