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How Can You Simplify the Process of Solving Multi-Step Linear Inequalities?

To make solving multi-step linear inequalities easier, here are some clear steps you can follow:

1. Know the Inequality Symbols

Inequalities use special symbols, which are:

  • << (less than)
  • >> (greater than)
  • \leq (less than or equal to)
  • \geq (greater than or equal to)

2. Treat Inequalities Like Equations

When solving inequalities, start by thinking of them as equations. Here are some basic steps:

  1. Get the variable by itself: Try to move the variable to one side of the inequality.
  2. Do the opposite operations: You can add, subtract, multiply, or divide, but make sure to keep the same direction for the inequality.

3. Important Rules for Multiplying/Dividing

When you multiply or divide by a negative number, you must flip the inequality sign. For example:

  • If you have 2x>6-2x > 6, dividing by 2-2 changes it to x<3x < -3.

4. Making Complex Inequalities Simpler

For tricky inequalities, you can simplify them like this:

  • Combine like terms: Add similar variables and numbers together.

    For example: If you solve 3x+5<2x+123x + 5 < 2x + 12, first subtract 2x2x from both sides to get x+5<12x + 5 < 12. Then, subtract 5 to find that x<7x < 7.

  • Distribute if you see parentheses: Use the distributive property. For instance, 2(3x4)82(3x - 4) \leq 8 becomes 6x886x - 8 \leq 8. Then, add 8 to both sides to get 6x166x \leq 16, and finally divide by 6 to find x83x \leq \frac{8}{3}.

5. Use a Number Line

You can draw a number line to show your solutions. This helps you see what values work for the inequality:

  • Open circles mean the number isn’t included (like x<2x < 2).
  • Closed circles show the number is included (like x2x \leq 2).

6. Practice to Improve

Try solving different inequalities to build your skills. Studies show that students who practice these problems do better, with over 70% earning a Grade 5 or higher on GCSE Maths tests by using these methods.

By following these simple steps, you can get better at solving multi-step linear inequalities!

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How Can You Simplify the Process of Solving Multi-Step Linear Inequalities?

To make solving multi-step linear inequalities easier, here are some clear steps you can follow:

1. Know the Inequality Symbols

Inequalities use special symbols, which are:

  • << (less than)
  • >> (greater than)
  • \leq (less than or equal to)
  • \geq (greater than or equal to)

2. Treat Inequalities Like Equations

When solving inequalities, start by thinking of them as equations. Here are some basic steps:

  1. Get the variable by itself: Try to move the variable to one side of the inequality.
  2. Do the opposite operations: You can add, subtract, multiply, or divide, but make sure to keep the same direction for the inequality.

3. Important Rules for Multiplying/Dividing

When you multiply or divide by a negative number, you must flip the inequality sign. For example:

  • If you have 2x>6-2x > 6, dividing by 2-2 changes it to x<3x < -3.

4. Making Complex Inequalities Simpler

For tricky inequalities, you can simplify them like this:

  • Combine like terms: Add similar variables and numbers together.

    For example: If you solve 3x+5<2x+123x + 5 < 2x + 12, first subtract 2x2x from both sides to get x+5<12x + 5 < 12. Then, subtract 5 to find that x<7x < 7.

  • Distribute if you see parentheses: Use the distributive property. For instance, 2(3x4)82(3x - 4) \leq 8 becomes 6x886x - 8 \leq 8. Then, add 8 to both sides to get 6x166x \leq 16, and finally divide by 6 to find x83x \leq \frac{8}{3}.

5. Use a Number Line

You can draw a number line to show your solutions. This helps you see what values work for the inequality:

  • Open circles mean the number isn’t included (like x<2x < 2).
  • Closed circles show the number is included (like x2x \leq 2).

6. Practice to Improve

Try solving different inequalities to build your skills. Studies show that students who practice these problems do better, with over 70% earning a Grade 5 or higher on GCSE Maths tests by using these methods.

By following these simple steps, you can get better at solving multi-step linear inequalities!

Related articles