Subtract 75/81 from 60/42, Solve 1 18/42

Subtract 75/81 from 60/42

1^st number: 1 18/42, 2^nd number: 75/81

60/42 - 75/81 is 95/189.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 42 × 27 = 1134,
60/42 = 60 × 27/42 × 27 = 1620/1134
Likewise, for the 2nd fraction, since 81 × 14 = 1134,
75/81 = 75 × 14/81 × 14 = 1050/1134
Subtract the two like fractions:
1620/1134 - 1050/1134 = 1620 - 1050/1134 = 570/1134
After reducing the fraction, the answer is 95/189

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