Subtract 84/42 from 16/18
1st number: 16/18, 2nd number: 2 0/42
16/18 - 84/42 is -10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
16/18 = 16 × 7/18 × 7 = 112/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
84/42 = 84 × 3/42 × 3 = 252/126 - Subtract the two like fractions:
112/126 - 252/126 = 112 - 252/126 = -140/126 - After reducing the fraction, the answer is -10/9
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