Writing & Solving Equations

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing one or more variables.

Front

What does the variable 'x' represent in an equation?

Back

The variable 'x' represents an unknown value that we are trying to solve for in an equation.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform operations to both sides of the equation to get the variable alone on one side.

Front

What is the purpose of writing an equation?

Back

The purpose of writing an equation is to represent a problem mathematically so that it can be solved.

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 first step in solving the equation 3 + x = 7?

Back

The first step is to subtract 3 from both sides of the equation.

Front

What is the solution to the equation 39 + x = 95?

Back

The solution is x = 56.

Front

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

Back

You can check your solution by substituting the value back into the original equation to see if both sides are equal.

Front

What is the equation to find how many packs of DVDs you can buy with 168 dollars if one pack costs 12 dollars?

Back

The equation is 12x = 168.

Front

What is the solution to the equation x/5 = 100?

Back

The solution is x = 500.