Subtract 60/54 from 27/70, Solve 27/70

Subtract 60/54 from 27/70

1^st number: 27/70, 2^nd number: 1 6/54

27/70 - 60/54 is -457/630.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 70 × 27 = 1890,
27/70 = 27 × 27/70 × 27 = 729/1890
Likewise, for the 2nd fraction, since 54 × 35 = 1890,
60/54 = 60 × 35/54 × 35 = 2100/1890
Subtract the two like fractions:
729/1890 - 2100/1890 = 729 - 2100/1890 = -1371/1890
After reducing the fraction, the answer is -457/630

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