Subtract 7/70 from 2/54, Solve 2/54

Subtract 7/70 from 2/54

2/54 - 7/70 is -17/270.

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,
2/54 = 2 × 35/54 × 35 = 70/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
7/70 = 7 × 27/70 × 27 = 189/1890
Subtract the two like fractions:
70/1890 - 189/1890 = 70 - 189/1890 = -119/1890
After reducing the fraction, the answer is -17/270

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