Two Step Equations

Front

What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable.

Front

How do you isolate a variable in a two-step equation?

Back

To isolate a variable, perform the inverse operations in the reverse order of how they appear in the equation.

Front

What is the first step to solve the equation 21 = 5 - r?

Back

Subtract 5 from both sides to get 16 = -r.

Front

What is the solution to the equation -27 = -7 - 4c?

Back

The solution is c = 5.

Front

How do you solve the equation 11 = 3z + 5?

Back

First, subtract 5 from both sides to get 6 = 3z, then divide by 3 to find z = 2.

Front

What is the solution to the equation -15 = 2r + 1?

Back

The solution is r = -8.

Front

How do you solve the equation -3t + 4 = 19?

Back

First, subtract 4 from both sides to get -3t = 15, then divide by -3 to find t = -5.

Front

What does it mean to perform the inverse operation?

Back

An inverse operation reverses the effect of the original operation, such as addition and subtraction or multiplication and division.

Front

What is the importance of checking your solution in a two-step equation?

Back

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

Front

What is the solution to the equation 5 - r = 21?

Back

The solution is r = -16.