Add and Subtract Rational Expressions
- $$\frac { 7 } { x - 9 } + \frac { 16 } { 9 - x }$$

question 234

Multiple Choice

Add and Subtract Rational Expressions
- $$\frac { 7 } { x - 9 } + \frac { 16 } { 9 - x }$$

• A) \(- \frac { 9 } { x - 9 }\)
• B) \(\frac { 23 } { x - 9 }\)
• C) \(\frac { 9 } { x - 9 }\)
• D) \(- \frac { 23 } { x - 9 }\)

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Definitions:

[H+]

Symbol denoting the concentration of hydrogen ions in a solution, indicative of its acidity.

HCl

Hydrochloric acid, a strong acid consisting of hydrogen and chlorine that is often used in industrial and laboratory settings.

K

The chemical symbol for potassium, a soft, silvery-white metal that is highly reactive with water.

[H+]

The concentration of hydrogen ions in a solution, which is a measure of the solution's acidity.