4|x+5|=20
Thanks for the help

4 |x = 5| = 20

First, divide both sides by 4. / Your problem should look like: 
Second, simplify  to 5. / Your problem should look like: 
Third, break the problem into 2 equations. / x + 5 = 5 and -(x + 5) = 5
Fourth, solve x + 5 = 5. / 
Cancel 5 on both sides. / 
Fifth, solve -(x + 5) = 5 / 
Simplify brackets / 
Add 5 to both sides / 
Add 5 + 5 / 
Multiply both sides by -1 / 
x = -10
Sixth, collect the solutions to the problems. / Your problem should look like: 

 x = -10, 0

4Ix+5I=20

 distributhing 4 through parantheses



 divide by -4 
simplify

The answer is : - 10

Whose mistake? can you give more details to what the question is asking?