Subtract 70/10 from 3/63, Solve 3/63

Subtract 70/10 from 3/63

1^st number: 3/63, 2^nd number: 7 0/10

3/63 - 70/10 is -146/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
3/63 = 3 × 10/63 × 10 = 30/630
Likewise, for the 2nd fraction, since 10 × 63 = 630,
70/10 = 70 × 63/10 × 63 = 4410/630
Subtract the two like fractions:
30/630 - 4410/630 = 30 - 4410/630 = -4380/630
After reducing the fraction, the answer is -146/21

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