Review for Flashcard 4a.1-4a.2 +/- Equations (Math 7)

Front

What is a one-step equation?

Back

A one-step equation is an equation that can be solved in a single operation, such as addition, subtraction, multiplication, or division.

Front

What is the goal when solving an equation?

Back

The goal is to find the value of the variable.

Front

How do you solve the equation y + 25 = 80?

Back

Subtract 25 from both sides to find y.

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 x - 10 = 20, how do you solve for x?

Back

Add 10 to both sides to find x.

Front

What does it mean to isolate a variable?

Back

To isolate a variable means to get the variable alone on one side of the equation.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value.