Solving Equations and Natural Numbers

The video tutorial explains how to find three consecutive natural numbers that sum to 138. It begins by defining the problem and clarifying that zero is not considered a natural number in this context. The tutorial then introduces variables to represent the numbers and sets up an equation. By simplifying and solving the equation, the first number is found, and the other two consecutive numbers are calculated. Finally, the solution is verified by checking the sum, ensuring the numbers are correct.

What is the sum of the three consecutive natural numbers we need to find?

• 145

• 130

• 138

• 150

Which of the following is NOT considered a natural number in this context?

• 3

• 1

• 0

• 2

If the first consecutive number is x, what is the expression for the third consecutive number?

• x + 1

• x + 2

• x + 3

• x + 4

What is the simplified form of the equation x + x + 1 + x + 2?

• 3x + 1

• 3x

• 3x + 3

• 3x + 2

What operation is used to isolate the variable term in the equation 3x + 3 = 138?

• Division

• Multiplication

• Subtraction

• Addition

After subtracting 3 from both sides of the equation, what is the resulting equation?

• 3x = 140

• 3x = 138

• 3x = 133

• 3x = 135

What is the value of x when you solve the equation 3x = 135?

• 35

• 40

• 50

• 45

What are the three consecutive natural numbers that sum up to 138?

• 46, 47, 48

• 44, 45, 46

• 43, 44, 45

• 45, 46, 47

How can you verify that the numbers 45, 46, and 47 are correct?

• By checking if their sum is 138

• By checking if their product is 138

• By checking if their average is 138

• By checking if their difference is 138

What is the sum of 45, 46, and 47?

• 138

• 137

• 139

• 140