Subtract 50/42 from 84/28, Solve 3 0/28

Subtract 50/42 from 84/28

1^st number: 3 0/28, 2^nd number: 1 8/42

84/28 - 50/42 is 38/21.

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,
84/28 = 84 × 3/28 × 3 = 252/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
50/42 = 50 × 2/42 × 2 = 100/84
Subtract the two like fractions:
252/84 - 100/84 = 252 - 100/84 = 152/84
After reducing the fraction, the answer is 38/21
In mixed form: 117/21

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