SOLUTION: I4x-7I -5=0 solve please

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Question 232151: I4x-7I -5=0
solve please
Answer by checkley77(12844) About Me  (Show Source):
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I4x-7I-5=0
4x-7=5
4x=5+7
4x=12
x=12/4
x=3 ans.
-[4x-7]-5=0
-4x+7-5=0
-4x=5-7
-4x=-2
x=-2/-4
x=2 ans.