Writing Equivalent Expressions

Which of the following is an example of an algebraic expression?

• 3(2 + 7) - 10
• 78 - 5 + 3
• 3x + 6y
• 8(3) - 5 + 2

What is the constant in the following expression:  5x + 4 + 3y - 2x

• 5
• 5x
• 4
• 3y

What is the coefficient of the following expression? 
7c + 8

• c
• 7
• 8
• 1

What are the variables of 7x+6y-9

• 6,7
• 9
• 6y, 7x
• x, y

Simplify: x + 3x + 6x + x

• 9x

• 11x

• 2x + 9x

• Can't be simplified

Simplify: m + m + m + m

• 4m

• m⁴

• m

• Can't be simplified

Like terms have the same _____ and the same _____.

• variables and numbers
• signs and numbers
• variables and exponents
• variables and signs

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

A _____________ is a symbol, usually a letter that stands for a number. 

• coefficient
• algebraic expression
• variable
• term

The quotient of a number and 8

• 8g
• 8/g
• g+8
• g/8