Solve the equation. Check the solution.

negative two over x plus four equals four over x plus three

A.negative thirteen over six
B.–11
C.negative eight over three
D.negative eleven over three

1 answer

To solve the equation, first find a common denominator for both fractions on each side of the equation. We can use x + 4 and x + 3 as the common denominator.

(-2)/(x + 4) = 4/(x + 3)

Multiply both sides by (x + 4)(x + 3) to get rid of the denominators:

-2(x + 3) = 4(x + 4)

Expand and simplify:

-2x - 6 = 4x + 16
-6 - 16 = 4x + 2x
-22 = 6x
x = -22/6
x = -11/3

So, the correct answer is:

D. negative eleven over three

Now, check the solution:

Replace x with -11/3 in the original equation:

(-2)/(-11/3 + 4) = 4/(-11/3 + 3)
(-2)/(-11/3 + 12/3) = 4/(-11/3 + 9/3)
(-2)/(1/3) = 4/(-2/3)
-6 = -6

The solution checks out.