Equations and Expressions Review

Front

Simplify the expression: -8x + 4x

Back

-4x

Front

In the equation x + 7 = 12, how do you isolate x?

Back

Subtract 7 from both sides. The solution is x = 5.

Front

Solve the equation: x + 7 = 12

Back

x = 5

Front

The variable k is being divided by 11. How do you isolate k?

Back

Multiply both sides by 11.

Front

Simplify the expression: 19 - (3 - 5b)

Back

16 + 5b

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operators without an equality sign.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.

Front

What is the purpose of isolating a variable?

Back

Isolating a variable allows you to solve for that variable's value.