Subtract 35/10 from 30/63, Solve 30/63

Subtract 35/10 from 30/63

1^st number: 30/63, 2^nd number: 3 5/10

30/63 - 35/10 is -127/42.

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,
30/63 = 30 × 10/63 × 10 = 300/630
Likewise, for the 2nd fraction, since 10 × 63 = 630,
35/10 = 35 × 63/10 × 63 = 2205/630
Subtract the two like fractions:
300/630 - 2205/630 = 300 - 2205/630 = -1905/630
After reducing the fraction, the answer is -127/42

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