Answer: 10
Explanation:
So you see, the lines: || mean absolute value. Anything that is negative inside these two lines will become positive.
This means, the new equation is:
2x + 19 = 4x -1
First, we'll try to isolate the x variable and the constant. We achieve this by subtracting 19 from both sides of the equation. Now, we have:
2x = 4x-20
Now, we'll subtract 4x from both sides so that we can isolate the x variable.
Now, we have -2x = -20
Finally, we divide both sides by -2
We then get:
x = 10