Equations - Add & Subtract

Front

What is an equation?

Back

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

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 variable in an equation?

Back

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

Front

What is the first step to solve n + 7 = 12?

Back

Subtract 7 from both sides of the equation.

Front

What is the solution to the equation n + 7 = 12?

Back

n = 5.

Front

Write an equation for the total distance of Ferdinand and Alonzo running 400 meters together.

Back

f + 150 = 400.

Front

What is the solution to the equation f + 150 = 400?

Back

f = 250.

Front

What is the first step to solve K - 7 = 28?

Back

Add 7 to both sides of the equation.

Front

What is the solution to the equation K - 7 = 28?

Back

K = 35.

Front

What does it mean to add or subtract in an equation?

Back

Adding or subtracting in an equation helps to isolate the variable and find its value.