what is 4x - 1/2 =8? Im looking for what the variable x is.Please explain because i dont understand what to do

Answer 1

lol this is easy.

Okay first, on problems like this, you need to get the variable ALONE. So that means 4x should be all by itself on one side.
To do that, you have to add the - 1/2 to both sides, so it equals zero on the first side, and the 4x is alone.

So now, without doing the math, it should look like:
4x - 1/2 +1/2 = 8 +1/2.

Doing the math:

4x = 8 1/2.

Then, since 4x is multiplication, you have to do the opposite and Divide on both sides, to get x by itself.

4x/4 = x
8 1/2/4 = 2.125

so, therefore, x = 2.125.

now you can go back and check the problem by plugging in x.

4(2.125) - 1/2 = ?
8 1/2 - 1/2 = ?
8 = 8

there you go :D

Answer 2

Okay, you are going to have to get the X variable alone to find out the value. So first, you have to add 1/2 to both sides because you need to cancel out the 1/2 on the "X" side.

4x-1/2=8
+1/2 +1/2

So now the problem reads 4x=8.5 because you added the 1/2 to both sides. Next you divide both sides by 4 because to get rid 4 on the "X" you need to do the opposite of multiplying which is dividing. Then you have the answer 8.5/4 or 17/8.

Answer 3

So you gotta get the "x" on the one side of the equation and the rest of the numbers on the other so......
4x - 1/2 = 8
+ 1/2 +1/2
4x = 8 1/2
/4 /4
x = 2 1/8

Answer 4

4x - 1/2 = 8
add 1/2 to both sides of the equation and you get
4x - 1/2 + 1/2 = 8 + 1/2
which can be simplified to
4x = 8 1/2
then you divide both sides by 4 and you get
4x/4 = 8 1/2 / 4
which can be simplified to
x = 2 1/8

Answer 5

4x = 8½
4x = 17 / 2
x = 17 / 8 = 2 1/8

Answer 6

4x -.5 +.5 = 8+.5 add a half to both sides to eliminate it from the variable side
4x = 8.5
4 4 divide both sides by 4 to get the variable by itself
x = 2.125 resulting in your answer

Answer 7

The other folks have solved the problem and have tried to explain the theory. I won't solve the problem, but I will tell you this....

1. Add up all numerical terms first.

2. You want to add the same number to both sides of the equation to move terms to the opposite side of the equal sign than the variable of interest

3. You want to multiply by the inverse of the number that is multiplied to your variable (on both sides of the equation). This will isolate your x.

Answer 8

4x = 8 + 1/2
x = (8.5) / 4
x+ 4.125 or 4 1/8.

Remember first move the 1/2 to the right of the equation.
Then move the 4 to right again, since it was 4 times X, move to the right, you need to divide it. example below:

2+3x = 8
answer:
3x=6 (8-6)
x= 6/3
x=2.

Hope this hlep.

Answer 9

put anything with x in it on the left side and all the numbers on the right

4x = 7 1/2

now divide each side of the equation by 4 for

x = 71/2 divided by 4 thats the answer

x also equals 1.875 and thats the true answer that the teacher wants

get it?

Answer 10

what u do to 1 side, u must do to the other. u need to get 4x by itself so add 1/2 to each side so now, 4x=8 1/2, now get x by itself, so divide each side by 4, now x=2.125. now check the math and substitute 2.125 for x and we have 4(2.125)-1/2 which does indeed equal 8.