Subtract 18/27 from 63/70, Solve 63/70

Subtract 18/27 from 63/70

63/70 - 18/27 is 7/30.

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,
63/70 = 63 × 27/70 × 27 = 1701/1890
Likewise, for the 2nd fraction, since 27 × 70 = 1890,
18/27 = 18 × 70/27 × 70 = 1260/1890
Subtract the two like fractions:
1701/1890 - 1260/1890 = 1701 - 1260/1890 = 441/1890
After reducing the fraction, the answer is 7/30

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