Math Problem Statement

Which inequality describes all solutions to 5(3 – x) < –2x + 6

Solution

To solve the inequality 5(3x)<2x+65(3 - x) < -2x + 6, let's break it down step by step:

Step 1: Expand the left side of the inequality.

Distribute the 5 across the terms inside the parentheses:

5(3x)=535x=155x5(3 - x) = 5 \cdot 3 - 5 \cdot x = 15 - 5x

Now the inequality is:

155x<2x+615 - 5x < -2x + 6

Step 2: Move all terms involving xx to one side.

Add 5x5x to both sides:

15<5x2x+615 < 5x - 2x + 6

Simplify:

15<3x+615 < 3x + 6

Step 3: Move the constant terms to one side.

Subtract 6 from both sides:

156<3x15 - 6 < 3x

Simplify:

9<3x9 < 3x

Step 4: Solve for xx.

Divide both sides by 3:

x>3x > 3

Final Solution:

The inequality that describes all solutions is:

x>3x > 3

Would you like further clarification on any of the steps?


Here are some related questions to consider:

  1. How would the solution change if the inequality was 5(3x)2x+65(3 - x) \leq -2x + 6?
  2. Can you graph the solution x>3x > 3 on a number line?
  3. What is the significance of flipping the inequality sign when multiplying or dividing by a negative number?
  4. How would you solve if there were fractions involved in the inequality?
  5. How do you solve a compound inequality, such as 5(3x)<2x+6<105(3 - x) < -2x + 6 < 10?

Tip: Always check your solution by substituting values back into the original inequality!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Linear Equations

Formulas

Distributive property: a(b + c) = ab + ac
Linear inequality: ax + b < cx + d

Theorems

Addition property of inequalities
Multiplication and division properties of inequalities

Suitable Grade Level

Grades 8-10