Solving Addition & Subtraction Equations With Variables

Front

What is an equation?

Back

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

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What is the purpose of isolating the variable in an equation?

Back

Isolating the variable allows us to determine its value by getting it alone on one side of the equation.

Front

What is the first step in solving the equation m + 5 = 18?

Back

Subtract 5 from both sides to isolate m.

Front

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

Back

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

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.

Front

What is the inverse operation of subtraction?

Back

The inverse operation of subtraction is addition.

Front

In the equation 19 = x - 5, what is the first step to solve for x?

Back

Add 5 to both sides of the equation.

Front

What is the solution to the equation 12 = y + 6?

Back

The solution is y = 6.

Front

What does it mean when an equation has a variable on both sides?

Back

It means that you need to simplify both sides to isolate the variable, often by adding or subtracting terms.