Subtract 42/9 from 30/18
1st number: 1 12/18, 2nd number: 4 6/9
30/18 - 42/9 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
30/18 = 30 × 1/18 × 1 = 30/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
42/9 = 42 × 2/9 × 2 = 84/18 - Subtract the two like fractions:
30/18 - 84/18 = 30 - 84/18 = -54/18 - After reducing the fraction, the answer is -3/1
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