What is the solution to X+9 = 24? A. x = 33B. x= 15C. x= 18D. x= 9
2 answers:
Answer:
B. x=15
Step-by-step explanation:
To find the solution to the equation, we must get x by itself on one side of the equation.
9 is being added to x. The inverse of addition is subtraction. Subtract 9 from both sides of the equation.
Let's check our solution. Plug 15 in for x.
This checks out, so we know our solution is correct. The answer is B. x=15
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Now we look at the common denominator.
It is x(x + 2)(x - 2).
x cannot be zero, -2 or 2 because that would cause a zero in the denominator.
Since we get x = 8, and x = 8 does not have to be excluded from the domain, the answer is x = 8.
Answer: x = 8