One-Step Equations - Adding and Subtracting

Front

What is a one-step equation?

Back

A one-step equation is an equation that can be solved in a single step by performing the same operation on both sides to isolate the variable.

Front

How do you solve the equation 18 + a = -50?

Back

Subtract 18 from both sides: a = -50 - 18, so a = -68.

Front

What is the solution to the equation 8 = x - 1?

Back

Add 1 to both sides: x = 8 + 1, so x = 9.

Front

How do you solve the equation x - 8 = -5?

Back

Add 8 to both sides: x = -5 + 8, so x = 3.

Front

What is the solution to the equation 4 + b = 30?

Back

Subtract 4 from both sides: b = 30 - 4, so b = 26.

Front

What operation do you perform to isolate a variable in an equation?

Back

You perform the inverse operation of what is currently being applied to the variable.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.

Front

What is the inverse operation of subtraction?

Back

The inverse operation of subtraction is addition.

Front

If you have the equation x + 5 = 12, how do you solve for x?

Back

Subtract 5 from both sides: x = 12 - 5, so x = 7.

Front

What does it mean to isolate a variable?

Back

To isolate a variable means to get the variable alone on one side of the equation.