Answer:
4 and any number other than 4
Step-by-step explanation:
The first answer is 8. Solve the equation for x.
x-4 = 4-x
To get rid of the x on the right side, you must add x to both sides
(x) + x - 4 = (x) + 4 - x
On the right side x-x=0 so now you are left with 4 on the right side
On the left side x+x=2x so you have 2x-4 on the left side.
Now add 4 to both sides to get rid of the 4 on the left side.
(4) + 2x - 4 = (4) + 4
On the left side, 4-4=0 so you are left with 2x.
On the right side 4+4=8
So now you have 2x = 8. To finish solving for x, you now need to divide both sides by 2.
2x 8
---- = -----
2 2
On the left, 2 divided by 2 equals 1 so you are left with x.
On the right, 8 divided by 2 equals 4.
So now you know what X must equal 4 to make the equation TRUE.
Any number other than 4 will make the equation false.
