Question

Solve -3x + 6 < 9.

Answer 1

-3x < 9 - 6

-3x < 3

0 < 3x + 3

3x + 3 > 0

3x > -3

x >-3/3

x > -1

Answer 2

-3x + 6 < 9
-3x < 9 - 6
-3x < 3
-3 < 3x
-3/3 < x
-1 < x

Answer 3

move 6 to the right hand side (RHS) by subtracting (-) 6 from both sides. You will get -3x < 9-6. That is the same as -3x < 3. divide both sides by 3 to get -x < 1. since you want to solve for x multiply by -1 both sides so that you get x < -1. In words: variable x is always less than value -1. Hope that helped :)

Answer 4

@Jire, is x really less than -1?