Isolating Variables in Equations

This video tutorial from Mathcation teaches how to solve one-step equations with decimals by isolating the variable using inverse operations. It includes three practice problems demonstrating addition, subtraction, and multiplication. The video also provides resources for further practice and encourages viewers to subscribe for more math content.

What is the main topic of the video?

• Understanding fractions

• Graphing linear equations

• Solving one-step equations with decimals

• Solving multi-step equations

What is the first step in solving one-step equations with decimals?

• Graph the equation

• Isolate the variable

• Multiply both sides by zero

• Add decimals to both sides

What operation would you use to isolate a variable in an equation with addition?

• Division

• Multiplication

• Subtraction

• Addition

If an equation involves subtraction, which operation should be used to isolate the variable?

• Division

• Multiplication

• Subtraction

• Addition

What is the inverse operation of multiplication?

• Addition

• Division

• Subtraction

• Multiplication

In the equation X + 4.5 = 11.2, what is the value of X?

• 8.7

• 7.7

• 6.7

• 5.7

How do you verify the solution of an equation?

• By adding decimals to the solution

• By multiplying the solution by zero

• By substituting the solution back into the equation

• By graphing the equation

In the equation X - 7.4 = 1.2, what is the value of X?

• 8.6

• 6.6

• 7.6

• 9.6

What operation is used to isolate X in the equation 2.3X = 16.1?

• Division

• Subtraction

• Addition

• Multiplication

What is the value of X in the equation 2.3X = 16.1?

• 6

• 9

• 7

• 8