Problem 86 of 7
Subtract rational expressions with unlike denominators: x/(2x+4) - 3/(x+2).
Hints
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use common denominator and manage signs.
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Use common denominator and manage signs across the subtracted numerator.
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Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
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1. Find the LCD.
2. Rewrite both fractions over the LCD.
3. Subtract the second numerator in parentheses, then simplify.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Subtracting denominators or losing parentheses.