Solving 2 Step Equations

Solve the equation: -3x + 5 = -16. What is the value of x?

• x = 3

• x = 5

• x = 7

• x = 10

Write an equation for: Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 7x + 10 = 24

• 5x + 10 = 24

• 6x + 10 = 24

• 8x + 10 = 24

What does it mean to isolate the variable?

• To combine like terms in an equation.

• To manipulate the equation so that the variable is alone on one side, allowing you to find its value.

• To substitute the variable with a number.

• To eliminate the variable from the equation.

What is the inverse operation of addition?

• Multiplication

• Division

• Subtraction

• Exponentiation

How do you isolate a variable in an equation?

• By adding the same number to both sides of the equation until the variable is alone on one side.

• By performing inverse operations to both sides of the equation until the variable is alone on one side.

• By multiplying both sides of the equation by the variable's coefficient.

• By dividing both sides of the equation by the variable's value.

What is a two-step equation?

• A type of equation that requires two operations to isolate the variable and solve for its value.

• An equation that can be solved in one step.

• A complex equation that involves multiple variables.

• An equation that has no solution.

What is a variable in an equation?

• A variable is a constant value that does not change.

• A variable is a symbol, often represented by a letter, that stands for an unknown value.

• A variable is a type of equation that has no solution.

• A variable is a number that is always positive.

How do you check if your solution to an equation is correct?

• Substitute the solution back into the original equation to see if both sides are equal.

• Multiply both sides of the equation by a random number.

• Add the solution to both sides of the equation.

• Graph the equation and see if the solution lies on the curve.

What is the solution to the equation 2x + 3 = 11?

• x = 2

• x = 3

• x = 4

• x = 5

If you bought a $5 magazine and four erasers for a total of $25, what is the equation to find the cost of each eraser?

• 5 + 4x = 25

• 5 + 4x = 20

• 5 + 4x = 30

• 5 + 4x = 15