Chapter 1: Solving Equations with Variables on Both Sides > Section Exercises 1.3> Exercise 15
15
Describe the error in solving the equation.
X
3x4=2x+1
3x-4-2x = 2x+1-2x
x-4=1
x-4+4=1-4
X=-3
2x should have been added to both sides of the equation.
The steps were done out of order. The first step should have been subtracting 4 from both sides of the equation.
A computational error was made. The difference 1-4 is not-3.
The 4 should have been added to the right side of the equation.