Subtract 84/36 from 30/42
1st number: 30/42, 2nd number: 2 12/36
30/42 - 84/36 is -34/21.
Steps for subtracting fractions
- 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,
30/42 = 30 × 6/42 × 6 = 180/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
84/36 = 84 × 7/36 × 7 = 588/252 - Subtract the two like fractions:
180/252 - 588/252 = 180 - 588/252 = -408/252 - After reducing the fraction, the answer is -34/21
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