Solving Linear Equations

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10 Questions

What is the definition of a linear equation?

An equation with the highest power of the variable equal to 1

What is the first step in solving a linear equation?

Simplify the equation

What type of linear equation can be solved in one step?

Simple linear equation

How do you eliminate fractions in a linear equation?

Multiply both sides by the least common multiple (LCM) of the denominators

What is the mistake in solving a linear equation if you forget to check the solution?

You will get an incorrect solution

What is the purpose of isolating the variable in a linear equation?

To get the variable alone on one side of the equation

How do you eliminate decimals in a linear equation?

Multiply both sides by a power of 10

What is a common mistake to avoid when solving a linear equation?

All of the above

What is the final step in solving a linear equation?

Check the solution

What is the difference between a simple linear equation and a multi-step linear equation?

Simple linear equations can be solved in one step, while multi-step linear equations require more than one step

Study Notes

Solving Linear Equations

What is a Linear Equation?

  • A linear equation is an equation in which the highest power of the variable (usually x) is 1.
  • It can be written in the form: ax + b = c, where a, b, and c are constants, and a ≠ 0.

Steps to Solve Linear Equations

  1. Simplify the equation: Combine like terms on both sides of the equation.
  2. Isolate the variable: Use addition, subtraction, multiplication, or division to get the variable alone on one side of the equation.
  3. Check the solution: Plug the solution back into the original equation to verify it is true.

Types of Linear Equations

  • Simple linear equations: Equations that can be solved in one step, such as 2x = 6.
  • Multi-step linear equations: Equations that require more than one step to solve, such as 2x + 3 = 7.

Solving Linear Equations with Fractions

  • Clear the fractions: Multiply both sides of the equation by the least common multiple (LCM) of the denominators to eliminate fractions.
  • Solve the equation: Follow the steps to solve linear equations.

Solving Linear Equations with Decimals

  • Clear the decimals: Multiply both sides of the equation by a power of 10 to eliminate decimals.
  • Solve the equation: Follow the steps to solve linear equations.

Common Mistakes to Avoid

  • Forgetting to check the solution: Verify the solution by plugging it back into the original equation.
  • Incorrectly isolating the variable: Ensure that the variable is alone on one side of the equation.
  • Not simplifying the equation: Combine like terms on both sides of the equation before solving.

Solving Linear Equations

Definition of a Linear Equation

  • A linear equation is an equation in which the highest power of the variable (usually x) is 1.
  • It can be written in the form: ax + b = c, where a, b, and c are constants, and a ≠ 0.

Steps to Solve Linear Equations

  • Simplify the equation by combining like terms on both sides.
  • Isolate the variable by using addition, subtraction, multiplication, or division to get the variable alone on one side.
  • Check the solution by plugging it back into the original equation to verify it is true.

Types of Linear Equations

  • Simple linear equations can be solved in one step, such as 2x = 6.
  • Multi-step linear equations require more than one step to solve, such as 2x + 3 = 7.

Solving Linear Equations with Fractions

  • Clear the fractions by multiplying both sides of the equation by the least common multiple (LCM) of the denominators.
  • Solve the equation by following the steps to solve linear equations.

Solving Linear Equations with Decimals

  • Clear the decimals by multiplying both sides of the equation by a power of 10.
  • Solve the equation by following the steps to solve linear equations.

Common Mistakes to Avoid

  • Forgetting to check the solution by plugging it back into the original equation.
  • Incorrectly isolating the variable, ensuring that the variable is alone on one side of the equation.
  • Not simplifying the equation by combining like terms on both sides before solving.

Learn how to solve linear equations by simplifying and isolating the variable. Understand the general form of a linear equation and follow step-by-step instructions to solve them.

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