Subtract 32/42 from 27/18, Solve 1 9/18

Subtract 32/42 from 27/18

1^st number: 1 9/18, 2^nd number: 32/42

27/18 - 32/42 is 31/42.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
27/18 = 27 × 7/18 × 7 = 189/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
32/42 = 32 × 3/42 × 3 = 96/126
Subtract the two like fractions:
189/126 - 96/126 = 189 - 96/126 = 93/126
After reducing the fraction, the answer is 31/42

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