Solving inequalities: x - (-4)^3 * x + 1 > 12, etc

[Guest]

Please check for correctness...thanks!!

x – (-4)^3 * x + 1 > 12
x + 64x + 1 >12
65x > 11
x > 11/65

AND

4 - 3x < 6 - x
-3x + x < 6 - 4
-2x < 2
x < -1

Thank you!!
Andrea

 

[minestrone]

Hi Andrea

You solved the first inequality correctly

but the second one is incorrect, only the last step though so you got everything else right

-2x<2

x>-1 <----- because you are multiplying -2x<2 by a negative number, the inequality sign is reversed