Writing & 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 x/2 - 5 = 3?

Back

Add 5 to both sides of the equation.

Front

What is the solution to the equation 1/2d + 27 = 58?

Back

d = 62.

Front

If you have the equation -4x + 1 = 21, what is the first step to solve for x?

Back

Subtract 1 from both sides of the equation.

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

In the equation 2n + 5 = 15, what is the value of n?

Back

n = 5.

Front

What is the purpose of using equations in real-life situations?

Back

Equations help to model and solve problems involving relationships between quantities.

Front

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

Back

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

Front

What is the relationship between the operations of addition and subtraction?

Back

They are inverse operations; addition undoes subtraction and vice versa.