High School

Solve the following inequality for [tex]r[/tex]. Write your answer in simplest form.

[tex]-10r - 3 \geq 10r + 6[/tex]

Answer :

Let's solve the inequality step-by-step:

We are given the inequality:
[tex]\[
-10r - 3 \geq 10r + 6
\][/tex]

Step 1: Move all terms involving [tex]\( r \)[/tex] to one side.

Subtract [tex]\( 10r \)[/tex] from both sides:
[tex]\[
-10r - 10r - 3 \geq 10r - 10r + 6
\][/tex]
This simplifies to:
[tex]\[
-20r - 3 \geq 6
\][/tex]

Step 2: Move the constant term to the other side.

Add 3 to both sides:
[tex]\[
-20r - 3 + 3 \geq 6 + 3
\][/tex]
This simplifies to:
[tex]\[
-20r \geq 9
\][/tex]

Step 3: Solve for [tex]\( r \)[/tex] by dividing both sides by -20.

Remember that when you divide or multiply both sides of an inequality by a negative number, the inequality sign reverses:
[tex]\[
r \leq \frac{9}{-20}
\][/tex]

Final Answer:

The solution for the inequality is:
[tex]\[
r \leq -0.45
\][/tex]