Subtract 15/70 from 3/54, Solve 3/54

Subtract 15/70 from 3/54

3/54 - 15/70 is -10/63.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 54 × 35 = 1890,
3/54 = 3 × 35/54 × 35 = 105/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
15/70 = 15 × 27/70 × 27 = 405/1890
Subtract the two like fractions:
105/1890 - 405/1890 = 105 - 405/1890 = -300/1890
After reducing the fraction, the answer is -10/63

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