Solving One and Two Step Equations

Front

What is the first step in solving the equation 13 = s - 21?

Back

Add 21 to both sides to isolate s.

Front

How do you simplify the expression 8a + 4b + 2c - 3b + a?

Back

Combine like terms to get 9a + b + 2c.

Front

What is the solution to the equation 7n = 42?

Back

n = 6.

Front

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

Back

To get the variable alone on one side of the equation.

Front

What is the best first step to solve the equation 3x = -9?

Back

Divide both sides by 3.

Front

What is a one-step equation?

Back

An equation that can be solved in a single operation.

Front

What is a two-step equation?

Back

An equation that requires two operations to solve.

Front

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

Back

Substitute the solution back into the original equation.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of multiplication?

Back

Division.