It will be negative 2,cause your equation is already in general form but we can't have a negative on a, so we should changed it on their opposite sign, so 2 will be negative
Answer:
x=20
Step-by-step explanation:
The line is a straight line, which is 180 degrees
x+100+3x = 180
Combine like terms
100+4x = 180
Subtract 100 from each side
100+4x-100=180-100
4x=80
Divide by 4
4x/4 = 80/4
x=20
Answer:
The equation is
..
The length of the towel bar is
..
Step-by-step explanation:
Given,
Length of the door = 
we can rewrite
as
.
We have to find out the length of the towel bar.
Let the length of towel bar be 'x'
`Since Vita wants that the distance from each end of the towel bar to the end of the door to be 9 inches.
So we can say that the length of the towel bar plus from each end of the towel bar to the end of the door plus from each end of the towel bar to the end of the door is equal to length of door.
framing in equation form, we get;

Hence The equation is
.
Now we solve the equation we get;
Subtracting both side by 18 we get;

Now we will make the denominator common we get;

Hence The length of the towel bar is
.