Solving Equations with Variables

Front

What is a variable in an equation?

Back

A symbol, often a letter, that represents an unknown value in an equation.

Front

What does it mean to solve an equation?

Back

To find the value of the variable that makes the equation true.

Front

What is the first step in solving the equation n + 2 = 5?

Back

Subtract 2 from both sides of the equation.

Front

What is the solution to the equation 2n + 4 = 10?

Back

n = 3.

Front

How do you isolate the variable in the equation 24 = 3(n)?

Back

Divide both sides by 3.

Front

What is the solution to the equation n + 7 + n = 21?

Back

n = 7.

Front

What is the process of checking your solution in an equation?

Back

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

Front

What does it mean to combine like terms in an equation?

Back

To add or subtract terms that have the same variable raised to the same power.

Front

What is the solution to the equation 2n + 11 = 19?

Back

n = 4.

Front

What is the purpose of using inverse operations in solving equations?

Back

To undo operations and isolate the variable.