Subtract 30/20 from 7/54, Solve 7/54

Subtract 30/20 from 7/54

1^st number: 7/54, 2^nd number: 1 10/20

7/54 - 30/20 is -37/27.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 54 × 10 = 540,
7/54 = 7 × 10/54 × 10 = 70/540
Likewise, for the 2nd fraction, since 20 × 27 = 540,
30/20 = 30 × 27/20 × 27 = 810/540
Subtract the two like fractions:
70/540 - 810/540 = 70 - 810/540 = -740/540
After reducing the fraction, the answer is -37/27

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