Solving 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 3n + 4 = 7?

Back

Subtract 4 from both sides to get 3n = 3.

Front

What is the second step to solve the equation 3n = 3?

Back

Divide both sides by 3 to find n = 1.

Front

Solve the equation 5d - 6 = 9.

Back

Add 6 to both sides to get 5d = 15, then divide by 5 to find d = 3.

Front

What does it mean to check your solution in an equation?

Back

To check your solution, substitute the value back into the original equation to see if both sides are equal.

Front

Solve the equation 9 = 2s + 1.

Back

Subtract 1 from both sides to get 8 = 2s, then divide by 2 to find s = 4.

Front

What is the solution to the equation -5 = 3m - 14?

Back

Add 14 to both sides to get 9 = 3m, then divide by 3 to find m = 3.

Front

Solve the equation 4c - 6 = 2.

Back

Add 6 to both sides to get 4c = 8, then divide by 4 to find c = 2.

Front

What is the inverse operation of addition?

Back

Subtraction.