X-4=3x+12
X=?
please help
Add 4 to both sides
x = 4 + 3 x + 12
combine like terms (4 and 12)
x = 3 x + 16
x-4=3x+12
-12 -12
x-16=3x
-x -x
-16=2x
x=-8
Add 4 to both sides
x = 4 + 3 x + 12
combine like terms (4 and 12)
x = 3 x + 16
subtract 3 x from both sides
- 4 x = 16
divide both sides by - 4
x = -4
Add 4 to both sides
x = 4 + 3 x + 12
combine like terms (4 and 12)
x = 3 x + 16
subtract 3 x from both sides
- 2 x = 16
divide both sides by - 2
x = -8
I get the same answer, Devin.
To solve for x in the equation X-4=3x+12, we can follow these steps:
Step 1: Combine like terms
First, we need to combine the terms involving x on one side of the equation. In this case, we have 3x on the right side and X on the left side. To eliminate X from the left side, we can subtract X from both sides of the equation:
X - X - 4 = 3x - X + 12
This simplifies to:
-4 = 3x - X + 12
Step 2: Combine like terms again
Next, we can further combine like terms on the right side of the equation. We have 3x and -x, which when combined equals 2x:
-4 = 2x + 12
Step 3: Isolate the variable
Now, we want to isolate the variable x by getting rid of the constant term 12 on the right side. We can do this by subtracting 12 from both sides of the equation:
-4 - 12 = 2x + 12 - 12
This simplifies to:
-16 = 2x
Step 4: Solve for x
Finally, we can solve for x by dividing both sides of the equation by 2:
(-16)/2 = 2x/2
This simplifies to:
-8 = x
So, the solution to the equation X-4=3x+12 is x = -8.