Question 661363: Could you please help my son? You want to solve an inequality containing the expression -3(2x-3). The next line in your solution would rewrite this expression as ? He doesnt have the book just a photo copy. Is there a way you can help me explain this to him. Thank you
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! solve an inequality containing the expression -3(2x-3).
:
We could write like this
:
-3(2x - 3) > -15
multiply both sides by -1, this changes the signs and reverses the inequality sign
3(2x - 3) < 15
Divide both sides by 3
2x - 3 < 5
Add 3 to both sides
2x < 5 + 3
2x < 8
divide both sides by 2
x < 4
:
Let's see if that's true, assume x is less than 4, lets say x = 3
-3(2(3) - 3 > -15
-3(6 - 3) > -15
-3(3) > -15
-9 > -15, is true, -9 is greater than -15
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