Subtract 27/7 from 54/45, Solve 1 9/45

Subtract 27/7 from 54/45

1^st number: 1 9/45, 2^nd number: 3 6/7

54/45 - 27/7 is -93/35.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
54/45 = 54 × 7/45 × 7 = 378/315
Likewise, for the 2nd fraction, since 7 × 45 = 315,
27/7 = 27 × 45/7 × 45 = 1215/315
Subtract the two like fractions:
378/315 - 1215/315 = 378 - 1215/315 = -837/315
After reducing the fraction, the answer is -93/35

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