exam Maths Puzzle Numerical Ability

Solve the equation |X + 11| = |2X + 5|

Here is what I have tried so far but it is not matching to any answer I have.

x + 11 = - 2x + 5 and -x +11 = 2x + 5

with this my answer are x=-2 and x=-6 but they are not correct

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