Equation vs Expression

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equals sign (e.g., 2 + 3 = 5).

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value but does not include an equals sign (e.g., 2x + 3).

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of the variables involved.

Front

What is the difference between an equation and an expression?

Back

An equation includes an equals sign and states that two expressions are equal, while an expression does not include an equals sign.

Front

Is 'x - 7' an expression or an equation?

Back

It is an expression.

Front

Is '12 + 5 = 17' an expression or an equation?

Back

It is an equation.

Front

What does the term 'variable' mean in mathematics?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.

Front

What is an example of a simple equation?

Back

An example of a simple equation is 3x + 2 = 11.

Front

What is an example of a simple expression?

Back

An example of a simple expression is 4y - 5.

Front

What does 'evaluate' mean in the context of expressions?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.