Subtract 4/63 from 72/10, Solve 7 2/10

Subtract 4/63 from 72/10

1^st number: 7 2/10, 2^nd number: 4/63

72/10 - 4/63 is 2248/315.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
72/10 = 72 × 63/10 × 63 = 4536/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
4/63 = 4 × 10/63 × 10 = 40/630
Subtract the two like fractions:
4536/630 - 40/630 = 4536 - 40/630 = 4496/630
After reducing the fraction, the answer is 2248/315
In mixed form: 743/315

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