Subtract 70/63 from 8/10, Solve 8/10

Subtract 70/63 from 8/10

1^st number: 8/10, 2^nd number: 1 7/63

8/10 - 70/63 is -14/45.

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,
8/10 = 8 × 63/10 × 63 = 504/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630
Subtract the two like fractions:
504/630 - 700/630 = 504 - 700/630 = -196/630
After reducing the fraction, the answer is -14/45

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