Simplifying Expressions

Front

What is simplifying expressions?

Back

Simplifying expressions means to combine like terms and reduce the expression to its simplest form.

Front

What is a coefficient?

Back

A coefficient is a number that is multiplied by a variable in an expression. For example, in 3x, 3 is the coefficient.

Front

What is a variable?

Back

A variable is a symbol, usually a letter, that represents a number in an expression or equation.

Front

What is a constant term?

Back

A constant term is a value that does not change. For example, in the expression 4x + 5, 5 is the constant term.

Front

How do you combine like terms?

Back

To combine like terms, add or subtract the coefficients of terms that have the same variable. For example, 2x + 3x = 5x.

Front

What is the expression for adding (x + 5) + (2x + 10)?

Back

The simplified expression is 3x + 15.

Front

What is the expression for simplifying 7 + 3(1 - 2x)?

Back

The simplified expression is 10 - 6x.

Front

What is the coefficient in the expression 5x - 9?

Back

The coefficient is 5.

Front

In the expression 3y, what is the 3 known as?

Back

The 3 is known as the coefficient.

Front

What does it mean to evaluate an expression?

Back

Evaluating an expression means to calculate its value by substituting numbers for the variables.