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

Subtract 10/63 from 8/70

8/70 - 10/63 is -2/45.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
8/70 = 8 × 9/70 × 9 = 72/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
10/63 = 10 × 10/63 × 10 = 100/630
Subtract the two like fractions:
72/630 - 100/630 = 72 - 100/630 = -28/630
After reducing the fraction, the answer is -2/45

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