SOLUTION: Solve using the addition and multiplication principles. 12x - 12 > 4(4x - 1)

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Question 320085: Solve using the addition and multiplication principles.
12x - 12 > 4(4x - 1)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
12x - 12 > 4(4x - 1)
12x-12>16x-4
12x-16x>-1+12
-4x>11
x<11/-4 note the sign change due to dividing by a negative value.
x<-2.75 ans.
Proof:
Let x=-2.76
12*-2.76-12>4(4*-2.76-1)
-33.12-12>4(-11.04-1)
-45.12>4*-12.04
-45.12>-48.16