Solving Equations with Addition and Subtraction

The video tutorial explains how to solve equations using addition and subtraction, emphasizing the concept of inverse operations. It provides step-by-step solutions to various equations, demonstrating how to isolate the variable by performing the inverse operation on both sides of the equation. Each solution is verified by substituting the result back into the original equation to ensure correctness.

What is the inverse operation of addition?

• Division

• Exponentiation

• Subtraction

• Multiplication

If x - 2 = 6, what should be added to both sides to solve for x?

• 1

• 4

• 2

• 3

After solving x - 2 = 6, what is the value of x?

• 9

• 6

• 7

• 8

In the equation 18 = x - 7, what operation should be performed to isolate x?

• Multiply both sides by 7

• Subtract 7 from both sides

• Add 7 to both sides

• Divide both sides by 7

What is the value of x in the equation 18 = x - 7?

• 18

• 25

• 11

• 7

To solve x + 2 = 9, what operation should be performed?

• Subtract 2 from both sides

• Divide both sides by 2

• Multiply both sides by 2

• Add 2 to both sides

What is the value of x in the equation x + 2 = 9?

• 6

• 8

• 5

• 7

In the equation 26 = 11 + x, what operation should be performed to solve for x?

• Add 11 to both sides

• Subtract 11 from both sides

• Multiply both sides by 11

• Divide both sides by 11

What is the value of x in the equation 26 = 11 + x?

• 15

• 16

• 17

• 18

What is the purpose of checking the solution by substituting back into the original equation?

• To verify the solution is correct

• To simplify the equation

• To find a different solution

• To change the equation