# Thread: Decimals, Inequalities & Confusion..

1. ## Decimals, Inequalities & Confusion..

Hey guys! So, could someone please explain the steps to me on this inequality with decimals, I gave it a try but..my answer did differ from the textbook..Sigh, I wish I just understood all of this and didn't have to stress about this one subject..

Here it is: 8(2x-0,2) > 0,4+3(-2x-0,1) (correct to 2 dec) -> That's exactly how its written in the textbook.

Any help would be appreciated!
Thanks!

2. ## Re: Decimals, Inequalities & Confusion..

Originally Posted by Simimano
Hey guys! So, could someone please explain the steps to me on this inequality with decimals, I gave it a try but..my answer did differ from the textbook..Sigh, I wish I just understood all of this and didn't have to stress about this one subject..

Here it is: 8(2x-0,2) > 0,4+3(-2x-0,1) (correct to 2 dec) -> That's exactly how its written in the textbook.

Any help would be appreciated!
Thanks!
I'll assume that the comma is being used for a decimal point. Most people would find it easier to read it like this: \displaystyle \begin{align*} 8(2x - 0.2) > 0.4 + 3(-2x - 0.1) \end{align*}

Solve inequalities the exact same way you would solve equalities. The only difference is that if you multiply or divide by a negative number, you need to change which way the inequality symbol points. In this case, start by expanding the brackets and simplifying on both sides.

3. ## Re: Decimals, Inequalities & Confusion..

In the answer in the textbook, I don't see where the "correct to 2 decimal" was even used..