Solve | 4 x+ 4 | = 3. Enter your solutions in a comma-separated list.

x =
I came up with -1/4 which is wrong

|4x+4| = 3

|x+1| = 3/4
x+1 = ± 3/4
x = -1 ± 3/4
x = -7/4 or -1/4

So, -1/4 is correct, as seen by using it:

|4(-1/4)+4| = |-1+4| = |3| = 3

you can verify -7/4 for yourself.