CPM Homework Help : CCA2 Problem 1-51

Find the error in the solution at right. Identify the error and solve the equation correctly.

Hint:

In the first step, $4.1x$ was subtracted from both sides of the equation. The solver says that $4.1x − 4.1x = 5.4x$ ; what does it really equal?
What is really left on the right side of the equation? Solve the equation from there.

More Help:

$0 = 5.4x + 23.7$

Answer:

$x ≈ −4.39$

$4.1x=9.5x+23.7$

$-4.1x=-4.1x$

$5.4x=23.7$

$5.4x=\frac{23.7}{5.4}$

$x=4.39$