Equations with Variables

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, often containing variables.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown number in an 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

What is the first step in solving the equation x + 4 = 14?

Back

Subtract 4 from both sides of the equation.

Front

What is the solution to the equation x + 4 = 14?

Back

x = 10.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of subtraction?

Back

Addition.

Front

What is the inverse operation of multiplication?

Back

Division.

Front

What is the inverse operation of division?

Back

Multiplication.

Front

If Charlie has 160 trading cards and they have a total of 340, how do you represent Anthony's cards with an equation?

Back

160 + c = 340.