WRITING AN EQUATION TO REPRESENT A WORD PROBLEM

Front

What is a variable in an equation?

Back

A symbol, often represented by a letter, that stands for 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 purpose of writing an equation from a word problem?

Back

To translate a real-world scenario into a mathematical expression that can be solved.

Front

In the equation 12x - 45 = 117, what does 'x' represent?

Back

The number of hours worked by Anna in her dog walking business.

Front

How do you isolate a variable in an equation?

Back

By performing inverse operations to both sides of the equation until the variable is alone.

Front

What is the first step in solving the equation 7 + 9x = 30?

Back

Subtract 7 from both sides to isolate the term with the variable.

Front

What does the equation 2x = 26 represent in a word problem?

Back

It represents a scenario where two people share a total amount of money equally.

Front

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

Back

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

Front

What is a constant in an equation?

Back

A fixed value that does not change, such as numbers like 45 or 12 in equations.

Front

What does the equation 43.73 = 12.5 + 9x represent?

Back

It represents the total cost of a notebook and pens, where x is the cost of each pen.