Solving 1 Step Equations Add or Sub

Solving 1 Step Equations

Some text here about the topic of discussion

Equation

______________________: mathematical expression with an equal sign.​​

Equations will have an unknown, in algebra we use a letter.

​The letter is known as the varaible​

Most common variable will be x.​

Open Ended

Why might we use another variable instead of x?

Inverse Operation

An operation that is the opposite of another operation.

We use inverse operations to solve equations.​

Multiple Choice

What is the opposite of addition?

• Subtraction

• Multiplication

• Division

Solving equations

Goal of any Equation

Goal of any equation is to get the variable by itself with a coefficient of 1 in front of the variable.

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Solving equations

Steps

To solve an equation

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1. You will use inverse operations.

2. What you do to 1 side you have to do to the other

3. When solving an equation you should have no other operations left.

​Subtraction

Addition

Solving 1 Step Equations

Multiple Choice

What operation will we use to solve this equation?

$$x-24=-18$$  

• Adding

• Subtracting

Multiple Choice

What will we add to both sides?

$$x-24=-18$$  

• Add 24

• Add 18

Draw

Solve for x, just write answer. Example if x=-10, write -10. Show work on dry erase

$$x-24=-18$$  

Multiple Choice

What operation will you do to solve this equation?

$$x-\left(-15\right)=20$$  

• Addition

• Subtraction

Multiple Choice

When you do Keep Change Change, what will equation look like?

$$x-\left(-15\right)=20$$  

• $$x-15=20$$  

• $$x+15=20$$  

Draw

Solve and show work

$$x+15=20$$