Two-Step Equation Variable

Solving Two Sided Variable Equations

Unit 7

Definitions

• Variable - is something that can change, or is a quantity in an equation that can change its value.

• Constant - is a value that does not change

• Coefficient - is the number that is multiplied by the variable in an algebraic expression

Examples

• Variables - is usually x, y, a, or b

• Constant - is 4, 6, 7, 8, -2, -3, 0

• Coefficient - is 3x, 2x, 30x, 1/2x, -3x, -6x

Steps to solving two sided equations:

• Combine the variables (letters) to one side

• Combine the constant (numbers) to the other side

• Solve for the variable

Multiple Select

Which of the following is an example of variables?

• 4

• x

• 0

• -4

• y

Multiple Choice

Solve the equation for n.

-n + 5 = n - 11

• -16

• 3

• -3

• 8

Solve the equation for X.

-n + 5 = n - 11

• First step is what?

• Add n to both sides so 5 = 2n - 11

• Second step is to What?

• Isolate the variable on one side so add 11 to both sides

• 16 =2n

• Last step is to divide the by the coefficient of 2 to both sides

• 8 = n

What step is incorrect when solving this equation?

What step is incorrect when solving this equation?

Multiple Choice

Find the value of p.

5p + 8 = 12p + 22

• p = 2

• p = 3

• p = - 2

• p = - 3

Multiple Choice

What is the goal of solving one step, two step or multiple step equations?

• Find the Constant

• Find the Variable

• Find the Coefficient

• To be confused

Multiple Choice

Solve for k:

12k + 15 = 35 +2k

• k = 2

• k = -2

• k = 4

• k = -4

Poll

How do you feel about solving Two sided equations?

• I need more practice

• I feel a little confused

• I feel confident

• I am totally lost