Simplifying and Evaluating expressions

Front

Simplify the expression: 2x + 1 + 7x

Back

9x + 1

Front

Terms that have the same variables such as 5x and -8x.

Back

Like terms

Front

Evaluate 8a - b if a = 10 and b = 6

Back

74

Front

What is the value of x + y if x = 3 and y = 5?

Back

8

Front

Back

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor in a term, such as 5 in 5x.

Front

What are variables in algebra?

Back

Variables are symbols used to represent unknown values, often denoted by letters like x or y.

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like + and -) without an equality sign.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the difference between like terms and unlike terms?

Back

Like terms have the same variable parts, while unlike terms have different variable parts.