Determine the Domain of the Fraction Equation: 5x/(2(x-7)) = 10/(8x)

Question

Find the domain

(no need to resolve)

5x2(x7)=108x \frac{5x}{2(x-7)}=\frac{10}{8x}

Video Solution

Solution Steps

00:00 Found the range of substitution, without solving the equation
00:04 In order to find the substitution range, we'll verify the denominator is not equal to 0
00:07 Since division by 0 is forbidden
00:13 Let's check the first denominator, set it to 0
00:17 Let's simplify what we can
00:22 Let's isolate X
00:27 This is the substitution range from the first fraction
00:31 Now let's check the second denominator, set it to 0
00:35 Let's isolate X
00:39 This is the second substitution range
00:42 And this is the solution to the question

Step-by-Step Solution

To find the domain of the rational equation 5x2(x7)=108x \frac{5x}{2(x-7)} = \frac{10}{8x} , we need to ensure neither denominator equals zero.

Start by examining the first denominator, 2(x7) 2(x-7) :

  • Set 2(x7)=0 2(x-7) = 0 .
  • Solve for x x to find x7=0 x - 7 = 0 , resulting in x=7 x = 7 .

Next, examine the second denominator, 8x 8x :

  • Set 8x=0 8x = 0 .
  • Solve for x x to find x=0 x = 0 .

Therefore, the function is undefined at x=0 x = 0 and x=7 x = 7 . These values should be excluded from the domain.

Thus, the domain of the given rational equation is all real numbers except where x=0 x = 0 and x=7 x = 7 .

This corresponds to the correct answer choice: x0,x7 x \neq 0, x \neq 7 .

Answer

x0,x7 x≠0,x≠7