Subtract 1/42 from 45/28, Solve 1 17/28

Subtract 1/42 from 45/28

1^st number: 1 17/28, 2^nd number: 1/42

45/28 - 1/42 is 19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
1/42 = 1 × 2/42 × 2 = 2/84
Subtract the two like fractions:
135/84 - 2/84 = 135 - 2/84 = 133/84
After reducing the fraction, the answer is 19/12
In mixed form: 17/12

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