Subtract 70/63 from 4/15, Solve 4/15

Subtract 70/63 from 4/15

1^st number: 4/15, 2^nd number: 1 7/63

4/15 - 70/63 is -38/45.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 15 × 21 = 315,
4/15 = 4 × 21/15 × 21 = 84/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
70/63 = 70 × 5/63 × 5 = 350/315
Subtract the two like fractions:
84/315 - 350/315 = 84 - 350/315 = -266/315
After reducing the fraction, the answer is -38/45

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