Solving a one step equation using subtraction

The video tutorial guides viewers through solving a one-step equation by isolating the variable. It emphasizes understanding equivalent equations and properties of equality. The instructor demonstrates using inverse operations to isolate the variable, ensuring the same operation is applied to both sides of the equation to maintain equivalence. The solution is reached by subtracting 9 from both sides, resulting in the variable equaling 20.

Why is it important to watch the previous videos before solving one-step equations?

• They provide background knowledge necessary for understanding.

• They contain the answers to the quiz.

• They are required for a grade.

• They are entertaining.

What is the first step in solving a one-step equation?

• Guess the value of the variable.

• Isolate the variable.

• Add random numbers to both sides.

• Multiply both sides by zero.

What is the inverse operation of addition?

• Addition

• Multiplication

• Division

• Subtraction

Why do we use the subtraction property of equality?

• To divide both sides by the same number.

• To multiply both sides by the same number.

• To ensure the equation remains balanced.

• To add numbers to both sides of the equation.

What is the solution to the equation X + 9 = 29?

• X = 29

• X = 18

• X = 20

• X = 38