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 are applied.

Front

What is the first step to solve the equation 15 = 2a + 7?

Back

Subtract 7 from both sides to get 8 = 2a.

Front

What is the second step to solve the equation 8 = 2a?

Back

Divide both sides by 2 to find a = 4.

Front

Solve the equation: 6 - 3a = 21.

Back

a = -5.

Front

What is the solution to the equation -4x + 1 = 21?

Back

x = -5.

Front

How do you check the solution of an equation?

Back

Substitute the solution back into the original equation to see if both sides are equal.

Front

What is the solution to the equation 8 = 4v + 12?

Back

v = -1.

Front

What does it mean to 'solve' an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Front

What is the inverse operation of addition?

Back

Subtraction.