Simplifying, Evaluating Algebraic Expressions

What are the like terms in the following algebraic expression? 2x - x + 8 + y - 7

• 8, -7

• 2x, -x, y

• 2x, -x

• 2, 1, 1

Simplify the expression: 7m - 3n + 2m - 5n

• 10m - 6n

• 9m - 8n

• 4m - 8n

• 16m - 2n

Simplify the expression: 3x + 2y - 5x + 4y

• 5x + 6y

• -2x - 2y

• -2x + 6y

• 8xy - 5

Evaluate the expression for x = 2 and y = 3: 5x - 2y + 4xy

• 15

• 28

• 20

• 10

Simplify the expression: 4p - 2q + 3p - 5q

• 5p - 2q

• 2p - 7q

• 11p - 3q

• 7p - 7q

Evaluate the expression for x = 5 and y = 2: 3x - 2y + 4xy

• 20

• 30

• 46

• 12

Simplify this numerical expression.

(12² - 6) ÷ 3

Evaluate this algebraic expression if m = 5

m² - 7