Subtract 27/28 from 42/36, Solve 1 6/36

Subtract 27/28 from 42/36

1^st number: 1 6/36, 2^nd number: 27/28

42/36 - 27/28 is 17/84.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
42/36 = 42 × 7/36 × 7 = 294/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
27/28 = 27 × 9/28 × 9 = 243/252
Subtract the two like fractions:
294/252 - 243/252 = 294 - 243/252 = 51/252
After reducing the fraction, the answer is 17/84

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