Writing Equations

Front

What is a variable?

Back

A letter that represents an unknown value.

Front

A number minus 9 is twelve. Write the equation.

Back

x - 9 = 12.

Front

Five less than a number n is thirty four. Write the equation.

Back

n - 5 = 34.

Front

Jo is thinking of a number. Four less than 9 times the number is 176. Write the equation.

Back

9x - 4 = 176.

Front

A number times two is eight. Write the equation.

Back

2x = 8.

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 solution to the equation 2x = 8?

Back

x = 4.

Front

What is the first step to solve the equation x + 5 = 12?

Back

Subtract 5 from both sides.

Front

What is the equation for 'three times a number x is equal to 15'?

Back

3x = 15.

Front

What does 'less than' indicate in an equation?

Back

It indicates subtraction.