Simplifying and Evaluating Algebraic Expressions

Simplify:
-5 - 15n - 10n + 19

• -25n + 14

• -25n + 4

• -5n + 14

• -5n + 24

What is an algebraic expression?

• a letter or a symbol used to represent an unknown value

• an expression that contains numbers, operations, and one or more variables

• a specific number whose values does not change

(y + z)² when y=5 and z=2

• 7

• 49

• 29

• 14

2x + 5(y - 1) when x=8 and y=5

• 20

• 31

• 36

• -4

Simplify the following:  
-8 + (15 - 3) ÷ 4

• -5

• 1

• -11

• 11

Evaluate n + 5² for n=3

• 13

• 8

• 25

• 28

Write an algebraic expression for:
the product of 5 and a number

• 5 + n

• n + 5

• 5n

• 5/n

Name the coefficient of ⅙h

• 6

• h

• ⅙

• 1

Evaluate expression: -5a -b for a= -6 and b= 3

• 33

• 30

• 27

• 24

Write an algebraic expression for:
8 more than a number

• 8 + n

• 8n

• 8 -n

• n-8