Subtract 18/27 from 9/70, Solve 9/70

Subtract 18/27 from 9/70

9/70 - 18/27 is -113/210.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 70 × 27 = 1890,
9/70 = 9 × 27/70 × 27 = 243/1890
Likewise, for the 2nd fraction, since 27 × 70 = 1890,
18/27 = 18 × 70/27 × 70 = 1260/1890
Subtract the two like fractions:
243/1890 - 1260/1890 = 243 - 1260/1890 = -1017/1890
After reducing the fraction, the answer is -113/210

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