SOLUTION: F(x)= 3x-8 ----- 4x+20 This means wherever you see the letter x, you replace it with (3x-8) since that is the given function. Therefore it would be set up: 4(

Question 503296: F(x)= 3x-8
-----
4x+20
This means wherever you see the letter x, you replace it with (3x-8) since that is the given function.
Therefore it would be set up:
4(3x-8)+20=0
Next, distribute (multiply 4(3x) and 4(-8)
12x-32+20=0
(-32+20 can be condensed)
12x-12=0
Now you want your x's on one side, and numbers on the other.
This is done by adding 12 to both sides so it cancels on one side, and transfers over to the other.
12x=12
Finally, we want x by itself to determine what its value is.
This is done by dividing by the number attached to the x.
And remember, whatever you do to one side, needs to be done to the other.
Therefore, divide both sides by 12
x=1
Answer by nic0le116(25) (Show Source): You can put this solution on YOUR website!
This means wherever you see the letter x, you replace it with (3x-8) since that is the given function.
Therefore it would be set up:
4(3x-8)+20=0
Next, distribute (multiply 4(3x) and 4(-8)
12x-32+20=0
(-32+20 can be condensed)
12x-12=0
Now you want your x's on one side, and numbers on the other.
This is done by adding 12 to both sides so it cancels on one side, and transfers over to the other.
12x=12
Finally, we want x by itself to determine what its value is.
This is done by dividing by the number attached to the x.
And remember, whatever you do to one side, needs to be done to the other.
Therefore, divide both sides by 12
x=1
RELATED QUESTIONS
Hi, Can someone please review the following, I did the work I just want to make sure... (answered by Earlsdon)

I am having trouble with linear equations. given the information of : m=2/3,(2-8) I (answered by solver91311)

What is the domain of the rational function... (answered by MathLover1)

Hello all I would like your help one more time. I've got most of what my teacher asked us (answered by jim_thompson5910)

Can I get some help please? Functions and Relations If f(x)=3x^2-4x+5 and g(x)=4x-3 (answered by BigToosie)

Given that f(x) = 1/x and (f/g)(x) = (x + 1)/(x^2 - x), find the function g. Let me (answered by math_tutor2020)

Find the domain f(x)=... (answered by robertb)

Find f of each given value of x. f(x)=3x-2 f(x)=3x2+4x-2 (the 2 after the first x is... (answered by solver91311)

Given the function f(x)=2e^3x+1 a. Find f(.20) b. Find the value of x such that... (answered by fractalier)