Subtract 14/27 from 30/70, Solve 30/70

Subtract 14/27 from 30/70

30/70 - 14/27 is -17/189.

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,
30/70 = 30 × 27/70 × 27 = 810/1890
Likewise, for the 2nd fraction, since 27 × 70 = 1890,
14/27 = 14 × 70/27 × 70 = 980/1890
Subtract the two like fractions:
810/1890 - 980/1890 = 810 - 980/1890 = -170/1890
After reducing the fraction, the answer is -17/189

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