Subtract 10/36 from 81/42, Solve 1 39/42

Subtract 10/36 from 81/42

1^st number: 1 39/42, 2^nd number: 10/36

81/42 - 10/36 is 104/63.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 42 × 6 = 252,
81/42 = 81 × 6/42 × 6 = 486/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
10/36 = 10 × 7/36 × 7 = 70/252
Subtract the two like fractions:
486/252 - 70/252 = 486 - 70/252 = 416/252
After reducing the fraction, the answer is 104/63
In mixed form: 141/63

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