Subtract 3/63 from 7/70, Solve 7/70

Subtract 3/63 from 7/70

7/70 - 3/63 is 11/210.

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,
7/70 = 7 × 9/70 × 9 = 63/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
3/63 = 3 × 10/63 × 10 = 30/630
Subtract the two like fractions:
63/630 - 30/630 = 63 - 30/630 = 33/630
After reducing the fraction, the answer is 11/210

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