Subtract 70/63 from 5/30, Solve 5/30

Subtract 70/63 from 5/30

1^st number: 5/30, 2^nd number: 1 7/63

5/30 - 70/63 is -17/18.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 30 × 21 = 630,
5/30 = 5 × 21/30 × 21 = 105/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630
Subtract the two like fractions:
105/630 - 700/630 = 105 - 700/630 = -595/630
After reducing the fraction, the answer is -17/18

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