Question

Find and describe the error.

Answer 1

Answer:

The error is in step 4

Step-by-step explanation:

$\frac{x-1}{x+4} - \frac{4x-11}{x+4}$

$\frac{x-1-4x-11}{x+4}$

$\frac{-3x-12}{x+4}$

In order to undo division you need to multiply

$\frac{-3x-12}{x+4}$ × $x+4$

$-3x -8 = 0$

Add 8 to both sides

$-3x=8$

Undo multiplication by dividing by -3

$\frac{-3x}{-3} = \frac{8}{-3}$

And your answer is

$x= -2.67$