Subtract 30/9 from 42/84
1st number: 42/84, 2nd number: 3 3/9
42/84 - 30/9 is -17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252 - Subtract the two like fractions:
126/252 - 840/252 = 126 - 840/252 = -714/252 - After reducing the fraction, the answer is -17/6
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