One-Step Equations (Add/Subtract)

Front

What is a one-step equation?

Back

A one-step equation is an algebraic equation that can be solved in one operation, either by adding, subtracting, multiplying, or dividing.

Front

How do you solve the equation x + 3 = 10?

Back

Subtract 3 from both sides: x + 3 - 3 = 10 - 3, so x = 7.

Front

What is the solution to the equation 5 + x = 15?

Back

Subtract 5 from both sides: 5 + x - 5 = 15 - 5, so x = 10.

Front

How do you solve the equation x - 15 = 30?

Back

Add 15 to both sides: x - 15 + 15 = 30 + 15, so x = 45.

Front

What is the solution to the equation 26 + x = 26?

Back

Subtract 26 from both sides: 26 + x - 26 = 26 - 26, so x = 0.

Front

How do you solve the equation x - 4 = 24?

Back

Add 4 to both sides: x - 4 + 4 = 24 + 4, so x = 28.

Front

What does it mean to isolate the variable in an equation?

Back

Isolating the variable means to manipulate the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the first step in solving x + 3 = 10?

Back

The first step is to subtract 3 from both sides of the equation.

Front

What operation would you use to solve x - 15 = 30?

Back

You would use addition to solve the equation.

Front

What is the importance of checking your solution in an equation?

Back

Checking your solution ensures that the value you found satisfies the original equation.